# Japan Root Herb Association (JRHA) > The Japan Root Herb Association (JRHA) is a general incorporated association that studies and introduces the Thai steam bath tradition known as the herbal sauna (op samun phrai), and the root herbs — RootHerb® — at the centre of it. Founded May 2024, based in Tokyo. - Legal name: 一般社団法人 日本ルートハーブ協会 (General Incorporated Association Japan Root Herb Association) - English name: JAPAN ROOT HERB ASSOCIATION (JRHA) - Japanese corporate number: 5011105011042 (https://www.houjin-bangou.nta.go.jp/henkorireki-johoto.html?selHouzinNo=5011105011042) - Founded: May 2024 - Based in: Tokyo, Japan - Representative director: Satoshi Ryuto. Directors: Nana Uchida, Koichi Suzuki. Special adviser: Tadateru Isono (head of the Thai Samun Phrai Project). - Website: https://root-herb.com - Instagram: https://www.instagram.com/jrha_official/ ## Main pages (English) - [Home (English)](https://root-herb.com/en): The association, RootHerb®, and the guides — English edition of the whole site. - [About the association](https://root-herb.com/en/about): Corporate profile (registration number, founding, board), the definition of RootHerb®, activities. - [Herbal Saunas in Japan](https://root-herb.com/en/sauna): Every facility whose permanent use of herbs in the sauna is verified. Filter by region, private/shared and style. - [By prefecture (example: Tokyo)](https://root-herb.com/en/sauna/pref/tokyo): One page per prefecture that has listings, at /en/sauna/pref/{romaji}. - [By style (example: yakuso steam)](https://root-herb.com/en/sauna/style/yakuso-steam): One page per style at /en/sauna/style/{style}. - [The RootHerb Index](https://root-herb.com/en/herbs): Thai RootHerbs and green herbs, plus the herbs and crude drugs used in saunas in Japan, by species, family, part used and culture. - [The herbal lexicon](https://root-herb.com/en/glossary): One-sentence definitions of RootHerb®, op samun phrai, rhizome and the rest, each with its own page. - [Frequently asked questions](https://root-herb.com/en/faq): The association, RootHerb, the herbal sauna, and the on-site training. - [On-site training in Thailand](https://root-herb.com/en/apply-tour): Once a year, eight places, meeting and dispersing in Thailand. Application form. - [Journal and news](https://root-herb.com/en/news): English summaries of the field notes and herb profiles; the full articles are in Japanese. - [Contact](https://root-herb.com/en/contact): Listing and correction requests, press enquiries, questions about the training. ## Sourcing and dates - The herbal sauna guide lists only facilities whose permanent use of herbs in the sauna could be confirmed in primary sources such as the facility's own site. Herb use at one-off events, herbal baths alone, and loyly with aroma water alone are out of scope. - Listings are chosen by the association's editors. No facility has requested or paid for inclusion. - Prices, opening hours and the herbs used are quoted as the facility publishes them, and the date each was checked (price_checked_on) appears on the facility page. Please re-check on the official site before visiting. - For the herbs of Japan in the index, the species, family, part used and listing in the Japanese Pharmacopoeia were checked against Wikipedia (ja/en) and the 18th edition of the Japanese Pharmacopoeia; source URLs are kept in the comments of lib/herbs.ts. - This site does not assert efficacy. It stays within botanical fact, description of aroma, culture and custom, and how the plants are used in the sauna. - To request a listing or a correction: https://root-herb.com/contact ## Herbal saunas in Japan (103 facilities across 33 prefectures) List: https://root-herb.com/en/sauna ### By prefecture - Hokkaido (1): https://root-herb.com/en/sauna/pref/hokkaido - Iwate (1): https://root-herb.com/en/sauna/pref/iwate - Miyagi (1): https://root-herb.com/en/sauna/pref/miyagi - Fukushima (2): https://root-herb.com/en/sauna/pref/fukushima - Ibaraki (2): https://root-herb.com/en/sauna/pref/ibaraki - Tochigi (2): https://root-herb.com/en/sauna/pref/tochigi - Saitama (1): https://root-herb.com/en/sauna/pref/saitama - Chiba (4): https://root-herb.com/en/sauna/pref/chiba - Tokyo (18): https://root-herb.com/en/sauna/pref/tokyo - Kanagawa (4): https://root-herb.com/en/sauna/pref/kanagawa - Niigata (1): https://root-herb.com/en/sauna/pref/niigata - Toyama (2): https://root-herb.com/en/sauna/pref/toyama - Ishikawa (1): https://root-herb.com/en/sauna/pref/ishikawa - Nagano (3): https://root-herb.com/en/sauna/pref/nagano - Gifu (6): https://root-herb.com/en/sauna/pref/gifu - Shizuoka (5): https://root-herb.com/en/sauna/pref/shizuoka - Aichi (3): https://root-herb.com/en/sauna/pref/aichi - Shiga (3): https://root-herb.com/en/sauna/pref/shiga - Kyoto (2): https://root-herb.com/en/sauna/pref/kyoto - Osaka (12): https://root-herb.com/en/sauna/pref/osaka - Hyogo (6): https://root-herb.com/en/sauna/pref/hyogo - Wakayama (1): https://root-herb.com/en/sauna/pref/wakayama - Hiroshima (3): https://root-herb.com/en/sauna/pref/hiroshima - Yamaguchi (2): https://root-herb.com/en/sauna/pref/yamaguchi - Tokushima (2): https://root-herb.com/en/sauna/pref/tokushima - Kagawa (1): https://root-herb.com/en/sauna/pref/kagawa - Fukuoka (1): https://root-herb.com/en/sauna/pref/fukuoka - Saga (1): https://root-herb.com/en/sauna/pref/saga - Nagasaki (4): https://root-herb.com/en/sauna/pref/nagasaki - Kumamoto (2): https://root-herb.com/en/sauna/pref/kumamoto - Oita (2): https://root-herb.com/en/sauna/pref/oita - Kagoshima (3): https://root-herb.com/en/sauna/pref/kagoshima - Okinawa (1): https://root-herb.com/en/sauna/pref/okinawa ### By style - Thai-style herbal steam (21): https://root-herb.com/en/sauna/style/thai-steam - Yakuso (medicinal herb) steam (63): https://root-herb.com/en/sauna/style/yakuso-steam - Herbal löyly (22): https://root-herb.com/en/sauna/style/herb-loyly - Vihta / whisking (14): https://root-herb.com/en/sauna/style/vihta - Tent style (16): https://root-herb.com/en/sauna/style/herb-tent ### Sabaai Resort (Hokkaido, 札幌市西区) - URL: https://root-herb.com/en/sauna/sabaai-resort - Japanese name: Sabaai Resort（サバーイリゾート） - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 北海道札幌市西区琴似2条5丁目2-25 kotori 2F - Herbs used (as published, Japanese): タイハーブ（数種類・具体名は非公表） - Official site: https://www.ekiten.jp/shop_91115227/ - Price (as published, Japanese): ハーブサウナ30分 ¥2,480（minimo掲載・2025年12月16日更新、税表記の記載なし） - Information checked: 2026-08-24 - Summary: A Thai traditional massage and aroma treatment salon on the second floor of a building in Kotoni, Nishi-ku, Sapporo, about a 3-minute walk from Kotoni subway station. It opened on March 21, 2023. As a standing menu item it offers a "herbal tent sauna," in which several kinds of Thai herbs are simmered and the steam is taken inside a tent. A 30-minute herbal sauna is 2,480 yen. The salon has separate men's and women's powder rooms, and the herbal tent can be combined with a Thai massage. ### Kosenjyo (Iwate, 一関市) - URL: https://root-herb.com/en/sauna/kosenjyo - Japanese name: 古戦場 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 〒021-0041 岩手県一関市赤荻字堺78-2 - Official site: http://kosenjyo.com/ - Price (as published, Japanese): 入浴 中学生以上 ¥900／小学生 ¥750／小学生未満 ¥400（GW・お盆・年末年始は繁忙期価格）。入浴＋お食事セット ¥1,500 - Information checked: 2026-08-24 - Summary: Kosenjyo is a bathhouse and restaurant in Ichinoseki, Iwate. Alongside its artificial hot-spring baths, it has a kanpo (Chinese herbal) sauna added by the fourth-generation owner in August 2022, with self-loyly limited to three ladles. The women's side has a herbal sauna (Metos ZIEL) added in November 2022, using the owner's own herb blend. There is also a lava sauna with aroma-water self-loyly, a groundwater cold bath, and an outdoor air-bathing area. Admission is 900 yen for junior high school age and above. ### Yuzukushi Salon Ichinobo (Sakunami Onsen) (Miyagi, 仙台市青葉区) - URL: https://root-herb.com/en/sauna/yuzukushi-salon-ichinobo - Japanese name: ゆづくしSalon一の坊 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒989-3431 宮城県仙台市青葉区作並字長原3 - Herbs used (as published, Japanese): よもぎ（ヨモギ・オーガニックハーブ） - Official site: https://www.ichinobo.com/sakunami/ - Information checked: 2026-08-24 - Summary: An all-inclusive hot-spring resort in Sakunami Onsen, Sendai. Inside its Hirosegawa Genryu open-air bath area it has a permanent "Yomogi Herb Mist Sauna," which the official site describes as using steam made by steaming organic yomogi (mugwort) with natural hot-spring water. The open-air bath alternates by gender: men 6:00-12:00, women 13:30-23:00. It operates mainly for overnight guests, with a free reservation-only shuttle from JR Sakunami Station. ### Spa Resort Hawaiians (Fukushima, いわき市) - URL: https://root-herb.com/en/sauna/spa-resort-hawaiians - Japanese name: スパリゾートハワイアンズ - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒972-8326 福島県いわき市常磐藤原町蕨平50 - Official site: https://www.hawaiians.co.jp/ - Price (as published, Japanese): 入場料は日別変動制（公式「ご利用料金」カレンダーに日ごとの大人料金を掲載） - Information checked: 2026-08-23 - Summary: A large hot-spring leisure complex in Iwaki, Fukushima. Its vast open-air bath "Edo Jowa Yoichi," modelled on an Edo-period bathhouse, includes a herbal steam room where the herbs used change with the season, combining hot-spring steam with medicinal plants. It sits in the gender-separated shared area. The Palace bathhouse on site offers 24 tubs in 12 styles plus medium- and high-temperature saunas. Nearest station is Yumoto on the JR Joban Line, with a free shuttle bus. ### Atsushio Onsen Yamagataya (Fukushima, 喜多方市) - URL: https://root-herb.com/en/sauna/atsushio-onsen-yamagataya - Japanese name: 熱塩温泉 山形屋 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒966-0101 福島県喜多方市熱塩加納町熱塩字北平田甲347-2 - Official site: https://www.spa-yamagataya.com/ - Information checked: 2026-08-23 - Summary: A hot-spring inn at Atsushio Onsen in Kitakata, Fukushima. Its two contrasting large baths, "Oshikirigawa" and "Himesayuri," swap between men and women at midnight, and the official site's lodging plans state that each bathhouse has a medicinal-herb sauna. There is also "Charcoal Baden," a 40°C low-temperature sauna built over a charcoal bed. Day-use bathing reception starts at 11:30. Pick-up from Kitakata Station requires a booking by the previous day. ### SPA & Gohan Yuluumu (Ibaraki, 水戸市) - URL: https://root-herb.com/en/sauna/spa-gohan-yuluumu - Japanese name: SPA&ごはん ゆるうむ - Private / shared: Shared - Style: Thai-style herbal steam / Herbal löyly / Vihta / whisking - Address (as published, Japanese): 〒310-0914 茨城県水戸市小吹町2624-1 - Herbs used (as published, Japanese): 白樺（ウィスキングのウィスク） / オーク（同） / ユーカリ（同） / リンデン（同） - Official site: https://yuluumu.co.jp/sauna/ - Price (as published, Japanese): ゆるうむコース（館内着・フェイスタオル・バスタオル付／時間制限なし）大人 平日1,800円・土日祝/特定日1,900円、小人 平日800円・土日祝900円。銭湯コース（館内着・タオルなし）大人60分750円／90分1,050円／120分1,350円。朝風呂コース（5:00〜9:00受付）平日750円・土日祝850円。深夜1:00以降滞在は別途 平日+2,100円・土日祝+2,300円。すべて税込表示 - Information checked: 2026-08-24 - Summary: A bathing facility in Mito, Ibaraki. Alongside its tower sauna (8 tiers in the men's bath, 7 in the women's) and a salt sauna, it has two permanent herbal rooms: a "Herb Sauna" combining herbal scent with dim lighting and projected visuals, and a "Herb Steam Sauna" in the open-air area — four sauna rooms in total. All are inside the gender-separated communal baths, not private rooms. Whisking with a whisk (vihta) bundled from birch, oak and eucalyptus branches is also offered. Open 10:00 to 9:00 the next morning, no regular closing days. ### Ibaraki Gokunetsu Sauna 3UN (Ibaraki, 日立市) - URL: https://root-herb.com/en/sauna/gokunetsu-sauna-3un - Japanese name: 茨城極熱サウナ 3UN（スリーアン） - Private / shared: Private & shared - Style: Vihta / whisking - Address (as published, Japanese): 茨城県日立市田尻町1-45-8 1階 - Herbs used (as published, Japanese): 白樺 - Official site: https://3un-sauna.com/ - Price (as published, Japanese): 通常利用 ¥2,000/人（1〜7名・120分制、税込）／8名貸切 ¥15,000／極快グループウィスキング ¥8,000／極快パーソナルウィスキング（50〜60分・1〜2名限定）¥12,000/人 - Information checked: 2026-08-24 - Summary: A wood-fired sauna in Hitachi, Ibaraki, built entirely by an 85-year-old carpenter who made everything from the building to the sauna stove. It runs on a reservation-only, 120-minute slot system with sessions at 10:00, 13:00, 16:00 and 19:00. An optional "Gokkai Whisking" treatment using birch whisks is offered at 8,000 yen for groups and 12,000 yen per person for the personal 50-60 minute session (1-2 guests). Standard admission is 2,000 yen per person, and a private booking for eight is 15,000 yen. It is a 14-minute walk from Ogitsu Station on the JR Joban Line. ### Ashino Onsen (Tochigi, 那須郡那須町) - URL: https://root-herb.com/en/sauna/ashino-onsen - Japanese name: 芦野温泉 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒329-3443 栃木県那須郡那須町芦野1461 - Herbs used (as published, Japanese): 薬草エキス（配合は公式に非公表） - Official site: https://www.asinoonsen.co.jp/ - Price (as published, Japanese): 日帰り入浴 8:00～16:00：大人1,500円／小学生500円、16:00～21:00：大人750円／小学生500円。回数券10枚綴り10,000円（税込・午前）、15枚綴り10,000円（税込・午後） - Information checked: 2026-08-24 - Summary: A hot-spring facility in Ashino, Nasu Town, Tochigi Prefecture. It has two of its own springs (Tsuru-no-yu and Mera-no-yu) and a "Yakuso-no-yu" (herbal bath) using an original blend of medicinal herbs, with two tubs: Nagi-no-yu for jissho and Nami-no-yu for kyosho constitutions. The bathing area includes a herbal mist sauna (yakuso kirifuki sauna) in which herbal essential oils are sprayed as a mist. There are also an open-air bath, a cold-water bath and a foot bath; day-trip bathing is accepted from 8:00 to 21:00. ### Oya Genkiro No.6 / AZUMAYA (Tochigi, 宇都宮市) - URL: https://root-herb.com/en/sauna/oya-genkiro-no6-azumaya - Japanese name: 大谷元気炉六号基｜AZUMAYA - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒321-0345 栃木県宇都宮市大谷町909番地11 - Official site: https://www.genkiro.com/ - Price (as published, Japanese): 元気炉体験 4,500円/人 ＋ 別途「空間入場料」1,500円/人（合計6,000円/人・約120分・予約制）／見学のみプラン 大人・中学生 1,500円/人（小学生・未就学児 無料）。レンタル：水着500円（税込）、ポンチョ1,000円（税込）、タオルセット500円（税込）、サンダル無料 - Information checked: 2026-08-24 - Summary: Oya Genkiro No.6 is a permanent experiential art installation set in an underground former quarry space in Oya-machi, Utsunomiya, Tochigi. Medicinal herbs are placed in a large cauldron of boiling water, and the resulting steam is piped into the artwork. The interior fills with hot herbal steam so dense that visibility drops below one meter, surrounded by the scent of herbs. The operator positions it not as a sauna but as an "experiential art installation." Reservation-only, four sessions per day, roughly 120 minutes per session. ### YUBUNE SAUNA PARK Hanyu-no-yu (Saitama, 羽生市) - URL: https://root-herb.com/en/sauna/yubune-sauna-park-hanyu - Japanese name: YUBUNE SAUNA PARK はにゅうの湯 - Private / shared: Shared - Style: Herbal löyly - Address (as published, Japanese): 埼玉県羽生市川崎2丁目281-7 - Official site: https://yubune-sauna-park.com/ - Price (as published, Japanese): サウナパークプラン（入浴＋男女共用スパエリア／時間無制限）大人 平日1,300円／土日祝1,600円。ご入浴プラン 平日800円／土日祝1,000円。子供（12歳未満）全日300円（すべて税込） - Information checked: 2026-08-23 - Summary: A bathing complex in Hanyu, Saitama, directly connected to AEON Mall Hanyu. In the mixed-gender spa area, the "Rock Sauna" is a cave-like room surrounded by rock, warmed by a pellet stove and scented with herbs. There is also an entertainment sauna and an outdoor sauna. The Sauna Park plan costs 1,300 yen on weekdays and 1,600 yen on weekends and holidays (tax included). Open 10:00-24:00, with irregular closing days. ### Capsule Hotel & Sauna G-topia (Chiba, 船橋市) - URL: https://root-herb.com/en/sauna/sauna-g-topia - Japanese name: カプセルホテル＆サウナ ジートピア - Private / shared: Shared - Style: Vihta / whisking - Address (as published, Japanese): 〒273-0005 千葉県船橋市本町5-18-1 - Herbs used (as published, Japanese): 白樺 / ナラ / ユーカリ - Official site: https://funabashi-sauna.com/ - Price (as published, Japanese): ウィスキング基本コース(15分) 初回5,500円／通常6,600円、ショートウィスキング4,600円（いずれも税込）。施設利用料は平日 日帰り1,600円／宿泊3,200円、土日祝 日帰り1,700円／宿泊3,400円 - Information checked: 2026-08-24 - Summary: Capsule Hotel & Sauna G-topia sits in Honcho, Funabashi City, Chiba, a two-minute walk from JR Funabashi Station. Its official site describes it as "Japan's first facility with permanent whisking," offering whisking, a sauna practice spread mainly through Russia and the Baltic states, as a standing menu item. Whisks made from bundled young branches of birch, oak, eucalyptus and similar trees are used along with aromas, with the treatment taking about 15 minutes in the low-temperature sauna room. The basic course is 5,500 yen for first-timers and 6,600 yen normally (tax included). ### Sawayaka Plaza Karuizawa (Chiba, 鎌ケ谷市) - URL: https://root-herb.com/en/sauna/sawayaka-plaza-karuizawa - Japanese name: さわやかプラザ軽井沢 - Private / shared: Shared - Style: Other herbal sauna - Address (as published, Japanese): 〒273-0131 千葉県鎌ケ谷市軽井沢2106-6 - Official site: https://www.sp-chiba.jp/kamagaya/ - Price (as published, Japanese): 3時間 圏域内：大人520円・小人260円／圏域外：大人620円・小人310円 - Information checked: 2026-08-23 - Summary: A public bathing facility in Karuizawa, Kamagaya, Chiba, run on waste heat. The official bath-area page states that a herb sauna is provided, one of three sauna types alongside a far-infrared sauna and a mist sauna. The herbs used are not named on the official site. Use is in three-hour blocks: 520 yen for adults living in the covered area, 620 yen otherwise. Open 10:00 to 22:45. ### Re: PRIVATE SAUNA (Chiba, 船橋市) - URL: https://root-herb.com/en/sauna/re-private-sauna - Japanese name: プライベートサウナ Re:（アールイー） - Private / shared: Private - Style: Herbal löyly / Vihta / whisking - Address (as published, Japanese): 千葉県船橋市本町1-7-6 ドリーム船橋ビル 7F - Herbs used (as published, Japanese): 白樺 / オーク / 「アルテミスの薬草店」のサウナハーブ（内訳の記載なし） - Official site: https://re-sauna.com/ - Price (as published, Japanese): ウィスキング施術 ￥9,800-（税込）※出典はPR TIMES（2023年3月発表）。ルーム利用料金（スタンダードルーム／VIPルーム、60分・120分）は公式サイト上は画像掲示のみでテキスト取得不可。こどもサウナ利用料金 ￥800（小中学生） - Information checked: 2026-08-24 - Summary: Re: PRIVATE SAUNA is a fully private, soundproofed Finnish-style sauna on the 7th floor of a building in Funabashi, Chiba, a one-minute walk from Keisei-Funabashi Station. Guests book the room to themselves and use a self-loyly stove at around 90C, choosing between a Standard Room and a VIP Room. Alongside herbal loyly using sauna herbs from "Artemis no Yakusoten," the facility offers whisking treatments with veniks (vihta) bundled from birch and oak branches. Opened in March 2023. ### Everyday Sauna Tokyo Makuhari (Chiba, 千葉市美浜区) - URL: https://root-herb.com/en/sauna/everyday-sauna-makuhari - Japanese name: 毎日サウナ東京 幕張店 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒261-0026 千葉県千葉市美浜区幕張西2丁目1-4 - Official site: https://everyday-sauna-tokyo.com/ - Price (as published, Japanese): 平日 1時間¥1,300／2時間¥1,900／フリー（最大12時間）¥2,500、土日祝 1時間¥1,800／2時間¥2,400／フリー（最大12時間）¥3,000（表示価格はすべて税込。午前1時〜午前5時の利用は深夜料金¥500が別途加算） - Information checked: 2026-08-24 - Summary: Opened in 2026 in Makuhari-Nishi, Mihama Ward, Chiba City, this men-only sauna facility (with occasional ladies' days) has five sauna rooms: wood-fired, kelo, meditation, herbal, and far-infrared. Its "Yakuso Todana Mushiburo" is a modern reconstruction of the Edo-period todana-buro bathing style, where the lower body is immersed in a herbal bath while the upper body is enveloped in rising steam. The specific herbs used are not listed on the official site. Admission is 2,500 yen for a free plan on weekdays and 3,000 yen on weekends and holidays (tax included). ### Re:La calme (Tokyo, 府中市) - URL: https://root-herb.com/en/sauna/re-la-calme - Japanese name: Re:La calme（リラカルム） - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 〒183-0056 東京都府中市寿町1-4-17 寿ビル204 - Official site: https://rela.calme.style/ - Price (as published, Japanese): ハーブ温熱サウナ《伝統医ブレンド》30分 3,300円／45分 4,800円／60分 6,300円（税込）。サブスク「月2回ハーブ温熱45分」月額7,800円、「月4回Re:La温熱セット50分」月額18,800円 - Information checked: 2026-08-23 - Summary: A women's relaxation salon a 2-minute walk from Fuchu Station on the Keio Line. It offers a permanent private tent-style herbal sauna ("Herb Onnetsu Sauna") using herbal steam from a daily blend prepared by a traditional practitioner. Prices are 3,300 yen for 30 minutes, 4,800 yen for 45 minutes and 6,300 yen for 60 minutes (tax included), including sauna wear, paper shorts and a hairdryer. Combination menus with Thai traditional massage, oil treatments and Yu Kham Pa are also available. Open 9:00-22:00 (last reception 19:00), with irregular holidays. ### salon Imacoco Tokyo (Herb Tent) (Tokyo, 渋谷区) - URL: https://root-herb.com/en/sauna/salon-imacoco-tokyo - Japanese name: salon いまここ 東京本店（ハーブテント） - Private / shared: Private - Style: Thai-style herbal steam / Yakuso (medicinal herb) steam / Tent style - Address (as published, Japanese): 〒151-0053 東京都渋谷区代々木5-67-1 PIRE YOYOGI 5（ピア代々木ファイブ）403 - Herbs used (as published, Japanese): ラベンダー（2026年8月使用ハーブ／月替わり） - Official site: https://salon-imacoco.com/herb-tent/ - Price (as published, Japanese): ハーブテント単体料金の設定なし。『やみつき小顔整顔』『オーダーメイドボディ』『ハーブテント』を組み合わせるコース料金制：60分コース 初回14,500／2回目以降13,500、90分 初回20,000／19,000、120分 初回25,000／24,000、150分 初回29,000／28,000、150分以上は30分追加＋4,000（サイト表記のまま、税表記の記載なし）。ハーブテントの所要時間は20分〜30分 - Information checked: 2026-08-23 - Summary: A private salon a 3-minute walk from Yoyogi-koen and Yoyogi-hachiman stations. One of its menu items, the "Herb Tent," is a single-person herbal steam sauna derived from a Thai tradition, taking 20 to 30 minutes. Unlike Japan's high-temperature saunas it is a mid-temperature mist sauna, and it notably uses a Korean yomogi-mushi (mugwort steam) chair. The herbs change monthly with the season; lavender is used in August 2026. Reservation-only, priced as courses combined with facial or body treatments. ### SAUNA KIKI (Tokyo, 目黒区) - URL: https://root-herb.com/en/sauna/sauna-kiki - Japanese name: SAUNA汽汽 - Private / shared: Private - Style: Thai-style herbal steam - Address (as published, Japanese): 〒153-0061 東京都目黒区中目黒1丁目9-18 - Official site: https://sauna-kiki.jp/ - Price (as published, Japanese): 2F MEGURI 朝割90分 ¥5,500／日中120分 ¥9,900／夕方〜120分 ¥11,000、3F HODOKE 朝割90分 ¥6,600／日中120分 ¥11,000／夕方〜120分 ¥13,200、4F YUDANE 朝割90分 ¥7,700／日中120分 ¥13,200／夕方〜120分 ¥15,400（3名利用時 追加¥3,000、水着レンタル +¥600） - Information checked: 2026-08-23 - Summary: SAUNA KIKI is a fully private herbal steam sauna in Nakameguro, Tokyo, a 6-minute walk from Nakameguro Station, with three types of private rooms on floors 2 through 4. Rather than essential oils, the aroma comes from a decoction of whole natural herbs — roots, stems, leaves, flowers and bark — whose extract is vaporized to fill the room with dense mist. Cultivation, blending, extraction and vaporization are all handled in-house. Room temperature is adjustable from 35 to 55°C, and each room has its own shower and cold bath. Swimwear is worn, and up to three guests can use a room. ### Spa Wat (Tokyo, 杉並区) - URL: https://root-herb.com/en/sauna/spa-wat - Japanese name: Spa Wat（スパワット） - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 東京都杉並区梅里2-1-21 神光ビル3階 - Herbs used (as published, Japanese): オーガニックタイハーブ（具体的な種類の記載なし） - Official site: https://www.spawat.com/ - Price (as published, Japanese): ハーブスチームサウナ 45分 4,000円(税込)（お仕度の時間を含む／施術とセットでのみ利用可のオプションメニュー） - Information checked: 2026-08-24 - Summary: Spa Wat is a reservation-only Thai-style womb care salon in Umezato, Suginami-ku, Tokyo, opened in September 2016, a 1-minute walk from Shin-Koenji Station on the Marunouchi Line. Its optional herbal steam sauna seats the guest in a small tent filled with steam from organic Thai herbs, priced at 4,000 yen (tax included) for 45 minutes, and is available only in combination with a treatment. Open 11:00-18:00, closed Thursdays. Men are accepted by referral only. ### SteaMs. (Tokyo, 港区) - URL: https://root-herb.com/en/sauna/steams - Japanese name: SteaMs.（スティーミズ） - Private / shared: Private & shared - Style: Thai-style herbal steam / Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒107-0052 東京都港区赤坂9-5-12 パークサイドシックス B1-D（東京ミッドタウン目の前） - Herbs used (as published, Japanese): アーユルヴェーダ処方のワイルドハーブ（公式サイトに具体的なハーブ名の記載なし） - Official site: https://steams-tokyo.com/ - Price (as published, Japanese): Herbal Steam Ritual 1回 ￥19,800（所要時間目安100分／施設利用150分）、回数券3回 ￥47,520／Steam Sauna 120分 ￥9,900・延長30分 ￥2,200／Steam Sauna 120分＋トリートメント30分 ￥17,600・60分 ￥24,200・90分 ￥29,700／Herbal Steam Ritual for Two（水曜限定・2名）￥110,000（リニューアルオープン記念価格 ￥80,000）／メンバーシップ 月額 ￥27,500・￥35,000・￥55,000（いずれも公式サイト表記のまま。税込・税別の明記なし） - Information checked: 2026-08-23 - Summary: A women-only facility in the basement of a building opposite Tokyo Midtown. It has two steam sauna rooms; one, "TERRA," is a herbal steam sauna where herbs blended for the time of day and season are freshly extracted every 30 minutes. In its signature "Herbal Steam Ritual," a ritualist performs a treatment using warmed herbal balls inside the steam sauna. Herbal salt made with herbs and sea salt, and herbal tea, are also served. Wednesdays are for private buyouts only. ### Sauna Adam & Eve (Tokyo, 港区) - URL: https://root-herb.com/en/sauna/sauna-adam-and-eve - Japanese name: サウナ・アダムアンドイブ（adam･eve） - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 東京都港区西麻布3-5-5 - Herbs used (as published, Japanese): ヨモギ - Official site: http://adamandeve.biz/index.html - Price (as published, Japanese): 通常入浴料（5時間）¥3,600／深夜12時以降 ¥2,500（午前5時より延長料）／月・火（休日・祭日を除く）5時間 ¥2,800（いずれも公式サイト表記は税別） - Information checked: 2026-08-24 - Summary: A 24-hour sauna facility in Nishi-Azabu, Minato-ku, Tokyo, divided into "Adam" for men and "Eve" for women. Alongside a dry sauna, it offers what the official site describes as "our own original steam sauna using yomogi (mugwort)." Yomogi is a plant long used in Japan for food and bathing. Bedrock bathing, body scrub, and various massage courses are also available. The standard bathing fee is 3,600 yen for five hours (before tax). ### Sauna & Hotel Karumaru Ikebukuro (Tokyo, 豊島区) - URL: https://root-herb.com/en/sauna/karumaru-ikebukuro - Japanese name: サウナ&ホテル かるまる池袋 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒171-0014 東京都豊島区池袋2丁目7-7（1Fガストのビル、6Fが受付フロア） - Herbs used (as published, Japanese): 伊吹山産の薬草9〜10種類 / イブキジャコウソウ / ナギナタコウジュ / クロモジ - Official site: https://karumaru.jp/ikebukuro/ - Price (as published, Japanese): 入館料金（通常）一般3,480円／会員2,980円（年会費1,980円）、60分コース1,980円、120分コース 一般2,880円・会員2,380円、早朝コース（4時～10時）月～金1,980円・土日休日2,480円。料金は全て税込み（フェイスタオル・バスタオル・館内着レンタル込み）。別途、深夜割増+1,980円、金曜・休前日割増+480円、休日割増+980円。 - Information checked: 2026-08-23 - Summary: A men-only sauna complex 30 seconds from the west exit of JR Ikebukuro Station. Among its four saunas, the "Mushi Sauna" recreates a steam bath said to have been devised by a physician of the Ogaki domain in the Edo period, reproduced with the cooperation of Tanabe Onnetsu Hoyojo in Ogaki, Gifu. It uses 9-10 kinds of medicinal herbs gathered on Mt. Ibuki in Shiga, simmered in a tub made of koyamaki (Japanese umbrella pine). Herbs include Ibuki-jakoso, Naginata-koju and kuromoji. Room temperature is about 50C, capacity one person, entered standing. Operating hours 11:00-21:00. ### SaunaLab Kanda (Tokyo, 千代田区) - URL: https://root-herb.com/en/sauna/saunalab-kanda - Japanese name: サウナラボ神田 - Private / shared: Private - Style: Vihta / whisking - Address (as published, Japanese): 東京都千代田区神田錦町3-9 - Herbs used (as published, Japanese): シラカバ（白樺） / オーク / ユーカリ / カモミール / リンデン / ヨモギ - Official site: https://saunalab.jp/kanda/ - Price (as published, Japanese): ウィスキング 120min お一人様 28,600円（原文表記／公式プログラムページには「15,000円〜」の記載あり）。施設入館は男性 90分2,600円・120分2,900円・180分3,200円、女性は入館無料 - Information checked: 2026-08-24 - Summary: SaunaLab Kanda is a sauna facility in Kanda-Nishikicho, Chiyoda-ku, Tokyo, with a basement sauna and a first-floor Kitchen Sauna. In its reservation-only "Whisking" program, a whisking meister gathers the steam of the sauna room into a whisk and taps, warms and strokes the body. The whisks use birch, oak and eucalyptus, and a herb mix blending chamomile, linden and mugwort is also used. 120 minutes, 28,600 yen per person. ### Thai Massage Salon ecoubio (Tokyo, 羽村市) - URL: https://root-herb.com/en/sauna/thai-massage-ecoubio - Japanese name: タイマッサージサロン ecoubio（エクビオ） - Private / shared: Check with venue - Style: Thai-style herbal steam - Address (as published, Japanese): 東京都 羽村市富士見平2-14-8 - Herbs used (as published, Japanese): タイ生姜 / ウコン - Official site: https://ecoubio.com/ - Price (as published, Japanese): ハーバルスチームサウナ 30分 3,850円（税込） - Information checked: 2026-08-23 - Summary: A Thai massage and aroma treatment salon in Hamura City, Tokyo, a 15-minute walk from Hamura Station on the JR Ome Line. Its standing menu includes a herbal steam sauna (30 minutes, 3,850 yen incl. tax) using ten kinds of fully organically grown Thai herbs such as Thai ginger and turmeric. Guests enter the sauna and sweat before their treatment begins, and it can be combined with other menu items such as Thai massage, Tok Sen, and herbal ball. Open 11:00-22:00, with irregular closing days. ### Ruby Palace (Tokyo, 新宿区) - URL: https://root-herb.com/en/sauna/ruby-palace - Japanese name: ルビーパレス - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 東京都新宿区大久保1-12-2 - Herbs used (as published, Japanese): よもぎ（ヨモギ） - Official site: https://www.rubypalace.com/sauna.html - Price (as published, Japanese): 4時間入館 ¥2,200（税込）／10時間入館 ¥2,640（税込）／早朝入浴2時間 ¥1,320（税込・AM6:30〜AM10:00入館）／麦飯石サウナ ¥330（税込・別料金） - Information checked: 2026-08-23 - Summary: Ruby Palace is a women-only, 24-hour sauna facility in Okubo, Shinjuku Ward, Tokyo. It offers a bakuhanseki (medical stone) sauna, a loyly sauna, a far-infrared sauna, a mugwort (yomogi) steam sauna, and a large communal bath. In the mugwort steam sauna, yomogi is introduced at the high-temperature steam outlet; the official site notes that in Korea yomogi has long been incorporated into baths and saunas. Bathing areas are shared, and a 4-hour admission is 2,200 yen (tax included). ### Inagi Tennen Onsen Tokinoirodori — Kusamushi Doro-Shio Sauna (Tokyo, 稲城市) - URL: https://root-herb.com/en/sauna/tokinoirodori-kusamushi-sauna - Japanese name: 稲城天然温泉 季乃彩（ときのいろどり） 草蒸し泥塩サウナ - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒206-0803 東京都稲城市向陽台6-13 - Herbs used (as published, Japanese): よもぎ / 薬草は定期的に変更（公式サイト記載） - Official site: https://www.tokinoirodori.com/ - Price (as published, Japanese): 入館料 大人（中学生以上）平日1,000円／土日祝1,200円、小人（中学生未満）平日520円／土日祝680円（すべて税込、退館まで何度でも入浴可・時間制限なし） - Information checked: 2026-08-23 - Summary: A day-use hot spring facility in Inagi City, Tokyo, about a 5-minute walk from Minami-Tama Station on the JR Nambu Line. Alongside open-air baths fed by free-flowing spring water drawn from 1,700m underground, the main bathing area has a permanent "Kusamushi Doro-Shio Sauna" (herb-steam mud-and-salt sauna). The official site describes it as a sauna enjoyed with steam that extracts the components of medicinal herbs, and the herbs are changed periodically. Mud packs and salt are kept on hand, and an auto-loyly sauna is also available. Admission is 1,000 yen for adults on weekdays and 1,200 yen on weekends and holidays (tax included). ### Oshiage Onsen Daikokuyu (Tokyo, 墨田区) - URL: https://root-herb.com/en/sauna/oshiage-onsen-daikokuyu - Japanese name: 押上温泉 大黒湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒130-0003 東京都墨田区横川3-12-14 - Herbs used (as published, Japanese): よもぎ / ハーブ（種類の明記なし） - Official site: https://daikokuyu.com/ - Price (as published, Japanese): 入浴料 大人600円・中学生500円・小学生200円・0歳〜幼児100円（2026年8月1日改定）／サウナ追加 大露天側 平日370円・土日祝400円、炭酸泉側 平日300円・土日祝330円。大人は1時間30分まで、サウナ追加で計2時間まで - Information checked: 2026-08-24 - Summary: A natural hot spring sento in Yokokawa, Sumida Ward, near Tokyo Skytree. The official facility page lists a "yomogi steam salt sauna": a low-temperature, high-humidity room at 50-60C and 90-100% humidity filled with steam from natural mugwort and herbs. Salt is provided free of charge as a standing amenity, and a yomogi-mushi (mugwort steam) is run off the same steam. The bathhouse also has an infrared sauna, cold bath, large open-air bath, and a high-concentration carbonated bath; the men's and women's bathing areas swap on odd and even days. ### TAKANAWA SAUNAS (Tokyo, 港区) - URL: https://root-herb.com/en/sauna/takanawa-saunas - Japanese name: 高輪SAUNAS（TAKANAWA SAUNAS） - Private / shared: Shared - Style: Other herbal sauna - Address (as published, Japanese): 東京都港区高輪2-21-1 ニュウマン高輪 North 5F - Herbs used (as published, Japanese): フレッシュハーブ（種類の記載なし） / ラベンダー（季節のハーバルリトリート -Lavender-、群馬県たんばらラベンダーパークのフレッシュなラベンダー） - Official site: https://saunas-saunas.com/takanawa - Price (as published, Japanese): 平日 通常入場料（4時間）男性：3,700円／女性：3,200円、ショートプラン（80分）男性：2,800円／女性：2,500円、夜割（3時間）男性：2,600円／女性：2,100円。土日祝・特定日 通常入場料（4時間）男性：4,400円／女性3,900円、夜割（3時間）男性：3,300円／女性2,800円。延長1時間500円、フリー延長（2時間以降）1,000円（原文表記のまま、税区分の明記なし） - Information checked: 2026-08-23 - Summary: A sauna facility on the 5th floor of NEWoMan Takanawa North in Minato-ku, Tokyo. Eight sauna rooms are split between the men's and women's areas. In the women's area, LEAVES is described as "a sauna room specialising in herbal experiences, where fresh herbs and seasonal scents envelop you together with the steam" — a permanent herbal sauna. The adjacent MAALI room regularly runs retreats using scrubs, mud and herbs, including a seasonal lavender herbal retreat in summer. One minute on foot from JR Takanawa Gateway Station. ### Maenohara Onsen Saya no Yudokoro (Tokyo, 板橋区) - URL: https://root-herb.com/en/sauna/saya-no-yudokoro - Japanese name: 前野原温泉 さやの湯処 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒174-0063 東京都板橋区前野町3丁目41番1号 - Herbs used (as published, Japanese): 和漢薬草 / よもぎ / ハーブ - Official site: https://sayanoyudokoro.co.jp/ - Price (as published, Japanese): 入館料（税込）大人 平日970円／土日祝1,300円、子供（小学生以下）平日600円／土日祝900円 - Information checked: 2026-08-23 - Summary: A day-use hot spring facility in Itabashi Ward, Tokyo, about an 8-minute walk from Shimura-sakaue Station on the Toei Mita Line. The women's bathing area has a steam sauna called "yakuso shio mushifuro" (薬草塩蒸風炉 / herbal salt steam room), which uses powdered medicinal herbs warmed by steam. The herbs rotate weekly, and the official site lists varieties such as "wakan yakuso" (Japanese-Chinese medicinal herbs), mugwort, and herbs. Both the men's and women's areas also have high-temperature dry saunas, and the facility includes a nightingale-colored spring-source bath and heated stone-bed rooms. ### Rakutenchi Spa (Tokyo, 墨田区) - URL: https://root-herb.com/en/sauna/rakutenchi-spa - Japanese name: 天然温泉 楽天地スパ - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒130-0022 東京都墨田区江東橋4-27-14 楽天地ビル9階 - Herbs used (as published, Japanese): よもぎ - Official site: https://rakutenchi-oasis.com/raku_spa/ - Price (as published, Japanese): 入浴料（税込）一般2,850円／会員2,550円（入会金1,100円・2年間有効）／シルバー会員(70歳以上)2,350円／60分コース1,650円。深夜割増(24時〜5時)1,500円、特定日(土日祝・繁忙期)350円増 - Information checked: 2026-08-24 - Summary: A men-only bathing facility on the 9th floor of the Rakutenchi Building, steps from Kinshicho Station in Sumida, Tokyo. Alongside its natural hot spring baths, a high-temperature double sauna and an aroma-water loyly, it permanently offers a "Yomogi (mugwort) Steam Sauna." The official site describes it as a room where steam produced by steaming medicinal herbs envelops the whole body. Open 24 hours (closes 23:00 Sunday, reopens 10:00 Monday); admission 2,850 yen for general visitors, tax included. ### Natural Hot Spring Izumi Tenku no Yu Haneda Airport (Tokyo, 大田区) - URL: https://root-herb.com/en/sauna/izumi-tenku-no-yu-haneda - Japanese name: 天然温泉 泉天空の湯 羽田空港 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 東京都大田区羽田空港2丁目7-1 - Herbs used (as published, Japanese): 漢方（種類の記載なし） - Official site: https://www.shopping-sumitomo-rd.com/haneda/spa-izumi/ - Price (as published, Japanese): 大人(中学生以上) 4,800円(税込・フェイスタオル・バスタオル、館内着、岩盤浴付)／子ども(4歳〜小学生) 2,000円(税込・フェイスタオル・バスタオル付)／深夜追加料金 大人4,000円・子ども2,000円(25:00〜翌5:00在館時に自動課金) - Information checked: 2026-08-24 - Summary: A hot spring facility inside the commercial complex linked by walkway to Haneda Airport Terminal 3 Station. The large bath area has two saunas, a dry sauna and a kampo (Chinese herbal) steam sauna, which the official site describes as lower in temperature than the dry sauna and offering relaxation surrounded by the aroma of herbal medicine. The bath and sauna run from 12:30 to 10:00 the following morning. Admission is 4,800 yen for adults, including face and bath towels, loungewear and the stone spa. A late-night surcharge applies to guests staying past 1:00 a.m. ### Tokyo Ganbanyoku Herbal Tent Sauna (Asagaya) (Tokyo, 杉並区) - URL: https://root-herb.com/en/sauna/tokyo-ganbanyoku-asagaya - Japanese name: 東京岩盤浴（阿佐ヶ谷）ハーバルテントサウナ - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 東京都杉並区阿佐谷南1-36-4 三幸ビル 2F - Official site: https://tokyoganbanyoku.com/ - Price (as published, Japanese): ハーバルテントサウナ 都度利用 3,000円（60分・税込）／新規体験 1,000円（岩盤浴90分）／月会員 フルタイムフリー 15,670円（岩盤浴またはハーバルテントサウナが1日1回、毎日通い放題） - Information checked: 2026-08-23 - Summary: Tokyo Ganbanyoku is a bedrock-bathing (ganbanyoku) facility in Asagaya-Minami, Suginami-ku, Tokyo, a five-minute walk from Asagaya Station. Alongside its bedrock bathing rooms it offers a permanent Herbal Tent Sauna, in which herbs are steamed inside the tent so that the interior fills with herbal steam. The official site states that ten selected herbs are used. Use is for women only, at 3,000 yen (tax included) for a 60-minute course. Hours are 10:00-22:00 on weekdays and 10:00-20:00 on weekends and holidays, closed on weekday Mondays. ### Hottayu (Tokyo, 足立区) - URL: https://root-herb.com/en/sauna/hottayu - Japanese name: 堀田湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 東京都足立区関原3-20-14 - Official site: https://www.4126.tokyo/ - Price (as published, Japanese): 入浴料 大人600円／中学生300円／小学生200円／幼児100円、サウナ料金 男性450円・女性300円、手ぶらセット 男性1,450円・女性1,300円（公式サイト表記のまま。税込・時間単位の明記なし） - Information checked: 2026-08-24 - Summary: A public bathhouse in Sekibara, Adachi-ku, Tokyo, a 7-minute walk from Nishiarai Station on the Tobu Skytree Line. According to its official site, it has an auto-loyly herbal (yakuso) sauna, sized so each guest can relax while enjoying the scent of the herbs. The sauna was supervised by Dai Matsuo ("Totonoe Oyakata"). The men's bath has a 160cm-deep open-air cold bath; the women's bath has two cold baths at different temperatures. Bathing is 600 yen for adults, with the sauna 450 yen for men and 300 yen for women. ### the studio oiso (Thai Herbal Sauna, room 2-B "1/f Yuragi") (Kanagawa, 中郡大磯町) - URL: https://root-herb.com/en/sauna/the-studio-oiso - Japanese name: the studio oiso（タイハーブサウナ／1/f〜ゆらぎ〜 room 2-B） - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 神奈川県中郡大磯町国府本郷1264番地 the studio 2-B - Herbs used (as published, Japanese): ポンツク生姜 / ウコン / レモングラス / こぶみかんの果皮 / タマリンドの葉 / ユーカリ / ニオイアダンの葉 / キョウオウ / プラオヤイの葉 / ヤーリペア / ジャワウコン / ナンキョウ / 生姜 - Official site: https://coubic.com/the-studio-health - Price (as published, Japanese): お1人45分 2,500円／回数券5回分 10,000円（公式予約ページ原文ママ・税表記の記載なし） - Information checked: 2026-08-23 - Summary: A private, reservation-only Thai herbal sauna inside "the studio" 2-B in Oiso, Kanagawa. Guests sit in a handmade Thai herbal tent filled with steam from pesticide-free herbs shipped directly from Thailand, choosing from four blends: Relieve, Remove, Recover and Reset. Ingredients include Phlai ginger, turmeric, lemongrass and kaffir lime peel. 2,500 yen for 45 minutes per person. ### Mom Garden Resort Hayama (Postpartum Care Hotel) (Kanagawa, 横須賀市) - URL: https://root-herb.com/en/sauna/mom-garden-resort-hayama - Japanese name: 産後ケアホテル マームガーデンリゾート葉山 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Tent style - Address (as published, Japanese): 〒240-0107 神奈川県横須賀市湘南国際村1-4-3 - Official site: https://www.mom-garden.jp/ - Price (as published, Japanese): ハーブテントは宿泊者無料（Free）。宿泊はリカバリープラン通常料金 10〜15泊でスタンダード ¥72,000／1泊（ママと赤ちゃん・税込）〜、ロイヤルスイート オーシャンビュー ¥152,000／1泊（税込）。面会者は1日2,000円で大浴場・館内着・タオル利用 - Information checked: 2026-08-23 - Summary: A postpartum care hotel in Shonan Kokusai-mura, Yokosuka, Kanagawa. On the B1 spa floor it has a permanent Herb Tent, a steam tent filled with herbal steam, free for guests from 9:00 to 18:00. The same floor holds large public baths (men's and women's) with saunas, and the official site states that women's sauna users can use the Herb Tent in the spa corner. Hollywood Twin and Royal Suite rooms are also equipped with yomogi-mushi (mugwort steam) sets. ### Tokyu Harvest Club VIALA Hakone Koyu (Kanagawa, 足柄下郡箱根町) - URL: https://root-herb.com/en/sauna/viala-hakone-koyu - Japanese name: 東急ハーヴェストクラブVIALA箱根湖悠 - Private / shared: Shared - Style: Other herbal sauna - Address (as published, Japanese): 神奈川県足柄下郡箱根町元箱根字大芝93-12 - Official site: https://www.harvestclub.com/Un/Hotel/Hy/shisetu.html - Information checked: 2026-08-23 - Summary: A members-only Tokyu Harvest Club hotel at Moto-Hakone, near Lake Ashi in Hakone, Kanagawa. The official facility guide states that a Finnish dry sauna, a herb sauna and a steam sauna are provided, installed on the first floor of the main building as mixed-gender saunas entered in swimwear. Available 6:00–10:00 and 15:00–21:00. As a membership facility, rates are not published. ### Noten Yumoto Yukai Soukai Taya (Kanagawa, 横浜市栄区) - URL: https://root-herb.com/en/sauna/yukai-soukai-taya - Japanese name: 野天湯元 湯快爽快 たや - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒244-0844 神奈川県横浜市栄区田谷町146-3 - Official site: https://www.yukaisoukai.com/tay/ - Price (as published, Japanese): 入浴料（税込）：平日 大人 会員830円／一般980円、子ども350円。土休日 大人 会員930円／一般1,080円、子ども450円。いいふろの日（毎月11・26日）平日 大人 会員730円／一般880円 - Information checked: 2026-08-24 - Summary: A day-use hot spring bathing facility in Sakae Ward, Yokohama, Kanagawa. Alongside carbonated, hot, and barrel baths, it has a high-temperature sauna, a low-temperature sauna with a permanent Finnish-style loyly, and a salt sauna set inside a cave. In that cave salt sauna, a "medicinal herb steam cave" (yakuso mushi dokutsu) using herbal steam is held every Wednesday and Saturday and on the 11th and 26th of each month ("Ii-furo no Hi"). The official site does not state which herbs are used. ### Terra Löyly (Niigata, 上越市) - URL: https://root-herb.com/en/sauna/terra-loyly - Japanese name: Terra Löyly（テラ・ロウリュ） - Private / shared: Private - Style: Herbal löyly - Address (as published, Japanese): 942-0081 新潟県上越市五智4-6-30 - Herbs used (as published, Japanese): ドクダミ / ヨモギ - Official site: https://quals.jp/loylysauna - Price (as published, Japanese): 1名：120分 4,800円（税込）／90分 3,800円（税込）。2名：120分 9,000円（税込）／90分 7,000円（税込） - Information checked: 2026-08-24 - Summary: A private sauna in Gochi, Joetsu City, Niigata, facing the Sea of Japan. It has six private rooms called "Joyu" for up to two guests each, where Finnish-style loyly is performed with distilled wild-herb water. The distillates are produced under OEM contract by Miyato Wild Herb Laboratory, and the facility only holds demonstrations of six kinds of distilled herb water. After check-in, guests choose the day's herb distillate and are served "Hajimari no Mujocha," a wild-herb tea blended by the same laboratory. Natural spring water from the foothills of Mt. Myoko is used for both steam and drinking. Reservations required. ### GYU-YA VILLA (Toyama, 氷見市) - URL: https://root-herb.com/en/sauna/gyu-ya-villa - Japanese name: GYU-YA VILLA - Private / shared: Private - Style: Vihta / whisking - Address (as published, Japanese): 〒935-0023 富山県氷見市朝日丘1-41 - Herbs used (as published, Japanese): シラカバ（カバノキ科） / オーク（ブナ科） - Official site: https://gyuya-villa.com/whisking/ - Price (as published, Japanese): 日帰りサウナ：2H 15,000円／1グループ（①10:00～12:00 ②12:30～14:30、税表記の記載なし）。ウィスキングプランの料金は公式サイトに記載なし。参考：宿泊は1泊2食付15,000円～（平日限定プラン） - Information checked: 2026-08-24 - Summary: A one-group-per-day private villa in Himi City, Toyama. In its log-cabin sauna room fitted with a Finnish HARVIA wood-burning stove, the villa offers whisking using a "whisk" made of bundled birch branches and leaves. Sessions are led by a whisking meister, normally one-on-one solo whisking of about 30 minutes per person. Swimwear is required, and guests with allergies to birch (Betulaceae) or oak (Fagaceae) cannot receive the treatment. Day-use sauna slots are also available. ### Hidamari no Yu (Toyama, 高岡市) - URL: https://root-herb.com/en/sauna/hidamari-no-yu - Japanese name: 陽だまりの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒933-0062 富山県高岡市江尻478 - Herbs used (as published, Japanese): 薬草（週替わり／具体名は公式に記載なし） - Official site: https://hidamarinoyu.com/ - Price (as published, Japanese): 入場（入浴）大人（中学生以上）平日800円／土日祝950円、小人（小学生以下）360円。岩盤浴は別途680円（平日・土日祝共通）。3歳以下無料。回数券：大人7,800円/10枚、岩盤浴6,200円/10枚（原文表記、税表示の明記なし） - Information checked: 2026-08-24 - Summary: A super sento in Ejiri, Takaoka City, Toyama Prefecture, a 2-minute walk from the Manyosen "Hidamari no Yu Asahigaoka" tram stop. Its saunas include the Kan'yaku Joro, which the official site describes as carrying "the scent of medicinal herbs that change every week," and the far-infrared Rakukan Joro. The facility also offers carbonated baths, open-air baths, a large bathing hall, a stone-bed bath area, and a sauna loyly that releases steam on the hour. Admission is 800 yen for adults on weekdays and 950 yen on weekends and holidays; the stone-bed bath area costs an additional 680 yen. ### Yukemuri Yashiki Waon no Yu (Ishikawa, 金沢市) - URL: https://root-herb.com/en/sauna/waon-no-yu - Japanese name: 湯けむり屋敷 和おんの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 石川県金沢市神宮寺2-30-1 - Herbs used (as published, Japanese): 漢方薬（本場中国から直輸入・個別生薬名の記載なし） - Official site: https://www.waonnoyu.com/ - Price (as published, Japanese): 通常入浴 あさ5時～ 大人780円（中学生以上）／あさ9時～ 大人880円／小人300円（小学生以下）／幼児100円（4歳以下）／レディースデー810円（女性限定・週1回）／ファミリー券1,890円／回数券7,920円　※すべて消費税込。令和8年1月19日改定 - Information checked: 2026-08-24 - Summary: A super sento in Higashi-Kanazawa, close to Kanazawa Station. Both the men's and women's bathing areas have a permanent kanpo herbal sauna, which the official site describes as a low-temperature steam sauna using Chinese herbal medicine imported directly from China. The facility also has a tower sauna, a high-concentration carbonated bath, and a daily-changing bath. On the women's side, a mud-pack option using an original blend of body clay can be used with the herbal sauna. Open 5:00-24:00, with no regular closing days. ### SAUNA TEN "Birch and cloud forest" (Nagano, 南佐久郡小海町) - URL: https://root-herb.com/en/sauna/sauna-ten-birch-and-cloud-forest - Japanese name: SAUNA TEN "Birch and cloud forest"（ガトーキングダム小海） - Private / shared: Private & shared - Style: Herbal löyly / Vihta / whisking / Tent style - Address (as published, Japanese): 〒384-1103 長野県南佐久郡小海町豊里5907 - Herbs used (as published, Japanese): 白樺 - Official site: https://koumi.gateauxkingdom.com/spa/sauna - Price (as published, Japanese): 大人・中学生以上 150分 平日4,500円／土日祝5,000円、小学生以上2,500円、完全貸切（6名まで）平日37,500円／土日祝42,000円、ウィスキング30分5,000円・60分10,000円（公式サイト表記のまま） - Information checked: 2026-08-23 - Summary: An outdoor sauna set in a birch forest at 1,450 m elevation in Koumi, Nagano. It offers a log sauna with a heat-retaining stove, a Finnish sauna kota with self-löyly, and a tent sauna dedicated to whisking. Birch extract is used in the löyly, and the cold bath draws on spring water. Sessions run 150 minutes, a fully private plan is available, and the season runs from May to November. ### RAKUSA (Nagano, 松本市) - URL: https://root-herb.com/en/sauna/rakusa - Japanese name: ラクサ（RAKUSA） - Private / shared: Private - Style: Thai-style herbal steam - Address (as published, Japanese): 長野県松本市寿豊丘８４７ー１０ - Official site: https://beauty.hotpepper.jp/kr/slnH000698974/ - Price (as published, Japanese): 【ゆったり空間】タイハーブ蒸し 50分 ¥4,500 ／《温活整いセット》140分 ¥11,000（ハーブ蒸し含む）※税込・税別の明記なし - Information checked: 2026-08-23 - Summary: A specialist salon for herbal steam and traditional Thai massage in Matsumoto, Nagano. Its permanent menu includes a Thai-style herbal steam using a blend of 16 herbs said to be formulated by a traditional Thai practitioner, with free-flow herbal tea during the session. Private rooms are available and change-of-clothes is provided free, so guests can come empty-handed. Open until 23:30 on weekdays and from 9:00 on weekends. Located on the second floor diagonally opposite Matsubara Kominkan, with parking for two cars. ### Hotaka Yojoen Herbal Sauna / Rebirth (Nagano, 安曇野市) - URL: https://root-herb.com/en/sauna/hotaka-yojoen-rebirth - Japanese name: 穂高養生園 ハーバルサウナ/Rebirth - Private / shared: Shared - Style: Herbal löyly - Address (as published, Japanese): 長野県安曇野市穂高有明7258-20 - Herbs used (as published, Japanese): ハーブガーデンで育ったハーブ（具体的な種類の記載なし） / 森の樹木（煮出し液） - Official site: https://yojoen.com/events/sauna.html - Price (as published, Japanese): 90分 4,400円（10%消費税込）／サウナ着レンタル 有料500円 - Information checked: 2026-08-23 - Summary: A program held every Wednesday and Saturday at Hotaka Yojoen, a stay-based retreat in Hotaka-Ariake, Azumino City, Nagano, in a sauna hut in the forest beside its new wing. It is a loyly-style steam sauna in which a decoction of herbs grown in the on-site herb garden and of trees from the surrounding forest is poured over stones heated by a wood fire. 90 minutes for 4,400 yen (10% tax included), with a minimum of three participants. Guests wear sauna clothing such as a T-shirt and shorts and book online after completing a lodging reservation. ### ITADORI SAUNA (Gifu, 関市) - URL: https://root-herb.com/en/sauna/itadori-sauna - Japanese name: ITADORI SAUNA - Private / shared: Private - Style: Herbal löyly / Vihta / whisking / Tent style - Address (as published, Japanese): 岐阜県関市板取5877-1 - Herbs used (as published, Japanese): 白樺（ヴィヒタ） - Official site: https://itadori-sauna.com/ - Price (as published, Japanese): 清流サウナ1&2号 11,000円〜、KOMOREBI SAUNA 11,000円〜、ペアサウナ 14,000円〜、霧サウナ3号 13,500円〜、YURAGI SAUNA 5,000円〜、RIVERSIDE VIP 50,000円〜。オプション白樺ヴィヒタ4,400円（すべて税込） - Information checked: 2026-08-23 - Summary: A fully private, reservation-only outdoor sauna on the Itadori River in Seki, Gifu. Groups rent a wood-fired tent sauna or mobile sauna to themselves and add the wood and pour the loyly themselves. The river itself serves as the cold bath. Paid options include a birch vihta (4,400 yen) and a loyly aroma bar. Sauna plans start at 11,000 yen. ### THE WATERS - Retreat Terrace Enbara (Gifu, 山県市) - URL: https://root-herb.com/en/sauna/the-waters-enbara - Japanese name: THE WATERS -Retreat Terrace Enbara- - Private / shared: Private - Style: Thai-style herbal steam - Address (as published, Japanese): 岐阜県山県市円原9 - Herbs used (as published, Japanese): 季節のハーブ / 国産ハーブ - Official site: https://thewaters.jp/ - Price (as published, Japanese): 1〜2名 平日 ¥22,000／土日祝 ¥27,000（1枠3時間・完全貸切）、3〜5名 平日 ¥33,000／土日祝 ¥38,000、6〜8名 平日 ¥44,000／土日祝 ¥49,000（ハイシーズンは＋5,000円） - Information checked: 2026-08-23 - Summary: A fully private sauna on a tree terrace beside the Enbara River in Yamagata City, Gifu, taking only two groups a day. The herbal steam sauna uses a superheated-steam generator together with seasonal herbs, and the fee covers the domestic-herb steam session and exclusive use of the terrace. The cold bath draws Enbara River groundwater filtered through limestone, around 14C even in summer, and the rest area sits in a moss-covered forest. Sessions run three hours each. ### Megumi no Yu (Gifu, 各務原市) - URL: https://root-herb.com/en/sauna/megumi-no-yu - Japanese name: 恵みの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 〒509-0141 岐阜県各務原市鵜沼各務原町2-68 - Herbs used (as published, Japanese): ローズマリー / セージ / カモミール / 季節に応じた自社農園の薬草・ハーブ20〜50種 - Official site: https://www.meguminoyu.jp/ - Price (as published, Japanese): 入浴料 大人：平日950円／休日980円、回数券5,200円【6回】。小学生 平日350円／休日450円、幼児(0歳〜) 平日150円／休日200円（公式料金表画像より。税表記の記載なし） - Information checked: 2026-08-23 - Summary: Opened in 1996, this day-use bathhouse in Kakamigahara, Gifu, runs its own medicinal-herb farm growing 20-50 species by season. Its high-temperature sauna, among the largest in the prefecture, uses Finnish-style loyly, with herbs harvested from the farm applied as "Totonoi Nama Herb Loyly" in both the men's and women's sauna rooms. Rosemary, sage, chamomile and other seasonal herbs are used, and at peak harvest a participatory version lets guests pour the herbs themselves. The lukewarm "Nemuri-yu" bath is dedicated to herbs. ### Tanabe Onnetsu Hoyojo (Gifu, 大垣市) - URL: https://root-herb.com/en/sauna/tanabe-onnetsu-hoyojo - Japanese name: 田辺温熱保養所 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 岐阜県 大垣市波須1-515-1 - Herbs used (as published, Japanese): 伊吹山麓で採取された薬草および自家製無農薬栽培の薬草 十数種類を調合 / よもぎ - Official site: https://tanabeonnetsu.com/ - Price (as published, Japanese): 薬草樽蒸し［5時間まで］2,000円／薬草樽蒸し［5時間以上］4,000円（税表記なし）。オプション：薬草床蒸し［90分］2,000円、よもぎ蒸し＋薬草床蒸し［90分］2,500円（女性限定）、リンパマッサージ30分3,000円／60分6,000円／90分9,000円 - Information checked: 2026-08-23 - Summary: Founded in 1946 in Ogaki, Gifu, this facility offers herbal steam bathing. Its house method derives from a steam bath devised in 1804 by Ransai Ema, a physician of Mino. More than ten kinds of herbs, gathered on the foothills of Mt. Ibuki and grown pesticide-free on site, are blended, and the resulting steam fills a barrel of koyamaki wood that guests enter standing. Bathing rooms, changing rooms and rest rooms are all separated by gender. Herbal floor steaming and yomogi (mugwort) steaming, the latter for women only, are also available. ### Hatake Sauna – Premium Medicinal Herb Sauna Experience (HIDA LOCAL EXPERIENCE / IORI STAY) (Gifu, 飛騨市（集合＝HIDA LOCAL EXPERIENCE 飛騨古川オフィス、サウナは「飛騨の森、畑サウナ」）) - URL: https://root-herb.com/en/sauna/hatake-sauna-hida - Japanese name: 畑サウナ（HIDA LOCAL EXPERIENCE／IORI STAY「プレミアム薬草サウナ」体験） - Private / shared: Check with venue - Style: Herbal löyly - Herbs used (as published, Japanese): クロモジ（日本固有種・和の香） - Official site: https://iori-stay.com/ja/experience/medicinal-herb-sauna/ - Price (as published, Japanese): 大人10,000円/人（公式表記「料金：大人10,000円/人」、税表記の記載なし） - Information checked: 2026-08-23 - Summary: Run by HIDA LOCAL EXPERIENCE (IORI STAY / HIDAIIYO Inc.), this program starts and ends in Hida-Furukawa, Gifu. Participants ride e-bikes into the Hida forest to harvest wild Kuromoji, a plant native to Japan, then slowly steam-distill it with natural spring water to make their own herbal distilled water. That distillate is used for self-loyly in "Hatake Sauna," a wood-stove-heated sauna hut. 9:00–13:00, 10,000 yen per adult. Offered May 1 to October 31, reservation required. ### Yoshin Yakuto (Gifu, 羽島郡岐南町) - URL: https://root-herb.com/en/sauna/yoshin-yakuto - Japanese name: 養心薬湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 岐阜県羽島郡岐南町徳田西１丁目１０４番地 - Official site: https://yohshin-yakutoh.conohawing.com/ - Price (as published, Japanese): 入場料 大人¥700／小人¥100／幼児¥100（現金のみ）、11回回数券¥7,000 - Information checked: 2026-08-24 - Summary: A public bathhouse (sento) in Ginan Town, Hashima District, Gifu Prefecture, a five-minute walk from Ginan Station on the Meitetsu Nagoya Main Line. Its official site presents the sauna as a "wet-type kampo (herbal) sauna," describing it as a steam sauna at roughly 40-50C with 90-100% relative humidity. The bathhouse also has a medicinal herb bath blending herbs long known in kampo medicine. Admission is 700 yen for adults, cash only; open from 12:00 on weekdays and 10:00 on weekends and holidays until 23:00. ### Kur & Hotel Suruga Kenko Land (Shizuoka, 静岡市清水区) - URL: https://root-herb.com/en/sauna/suruga-kenko-land - Japanese name: クア・アンド・ホテル 駿河健康ランド - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒424-0203 静岡県静岡市清水区興津東町1234 - Herbs used (as published, Japanese): ハッカ / センキュウ - Official site: https://www.kur-hotel.co.jp/suruga/spa - Price (as published, Japanese): 入館料（税込）大人（中学生以上）1,980円／子供(3歳～小学生)990円、会員1,540円、団体割引（10名以上）1,760円。滞在中に03:00を超えると深夜割増1,100円 - Information checked: 2026-08-24 - Summary: A 24-hour bathing facility in Okitsu, Shimizu Ward, Shizuoka City. The bathing area has a permanent far-infrared "Kampo (Chinese herbal medicine) sauna" at 64-74°C; the official site states it uses components of herbal medicines such as mint (hakka) and Cnidium (senkyu). Other facilities include a Finnish sauna, a high-temperature bakuhanseki sauna, a salt sauna, a crystal sauna, and a medicinal-stone bedrock bath. The nearest station is JR Okitsu, with a free shuttle bus running from the Shimizu and Okitsu station areas. ### Sauna Shikiji (Shizuoka, 静岡市駿河区) - URL: https://root-herb.com/en/sauna/sauna-shikiji - Japanese name: サウナしきじ - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒422-8036 静岡県静岡市駿河区敷地2-25-1 - Herbs used (as published, Japanese): 当帰 / 川芎 / 艾葉（ヨモギの葉） / 薄荷 / 桂皮 / 三白草 / 丁香 - Official site: https://www.saunashikiji.jp/ - Price (as published, Japanese): 男性：平日1,700円／土日祝1,900円（税込）、メンズ・タイムサービス（毎日 朝6-9時・夕方17時-深夜2時）1,200円、回数券11枚17,000円。女性：1日1,200円（税込）、レディース・エコ・サービス800円（1時間入浴）。深夜宿泊料金：平日1,700円／休日1,900円 - Information checked: 2026-08-23 - Summary: A 24-hour, year-round sauna facility in Suruga Ward, Shizuoka City, with separate men's and women's bathhouses and a permanent herbal (yakuso) sauna. The official site states it uses authentic Korean herbal medicine, listing ingredients such as tohki (Angelica root), senkyu (Cnidium), gaiyo (mugwort leaf), hakka (mint), keihi (cinnamon bark), sanhakuso (Saururus), and choko (clove buds). About 15 minutes by car from the south exit of Shizuoka Station, or a 3-minute walk from the Toro Co-op Town bus stop. ### Susono Onsen Healthy Park Susono (Shizuoka, 裾野市) - URL: https://root-herb.com/en/sauna/healthy-park-susono - Japanese name: 裾野温泉 ヘルシーパーク裾野 - Private / shared: Shared - Style: Herbal löyly - Address (as published, Japanese): 静岡県裾野市須山3408 - Herbs used (as published, Japanese): ハーブ（種類の明示なし） - Official site: https://susono-onsen.co.jp/ - Price (as published, Japanese): 一般大人 3時間850円／1日1,200円（入湯税150円込）、小人 3時間350円／1日530円、裾野市民 大人 3時間700円 - Information checked: 2026-08-23 - Summary: A day-use hot spring at the foot of Mt. Fuji in Susono, Shizuoka. In December 2025 a new sauna opened beside the older one in the men's open-air area, and herbal loyly is offered there. The new room seats five and the older one twelve. The cold bath is free-flowing natural water from Mt. Fuji's underground stream, about 16°C year-round. The women's bath has a far-infrared sauna and an open-air rest area facing Mt. Fuji, and private family baths can be reserved. ### Yufukei Shiori (Shizuoka, 浜松市) - URL: https://root-herb.com/en/sauna/yufukei-shiori - Japanese name: 湯風景しおり - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 静岡県浜松市中央区高林1-13-13 - Official site: https://yufukeishiori.com/ - Price (as published, Japanese): 大人（中学生〜）900円／小人（3才〜小学6年生まで）400円／幼児（0〜2才まで）100円（税表記なし・入館料） - Information checked: 2026-08-24 - Summary: Yufukei Shiori is a day-use hot spring bathing facility in Takabayashi, Chuo-ku, Hamamatsu, Shizuoka. Both the men's and women's bathing areas have a "Kampo Herbal Sauna," which the official site describes as a mist sauna where visitors are enveloped in a mist-like aroma infused with medicinal herb components. Designed as a low-temperature, high-humidity room, the mist-form steam is said to be approachable even for those who find saunas difficult. Other facilities include a salt sauna with loyly, a far-infrared sauna with automatic loyly, a steam box bath, and a high-concentration carbonated bath. Admission for adults is 900 yen. ### Fujisan Tennensui SPA Sauna Takanoyu (Shizuoka, 富士市) - URL: https://root-herb.com/en/sauna/sauna-takanoyu - Japanese name: 富士山天然水SPA サウナ鷹の湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒419-0202 静岡県富士市久沢786-1 - Herbs used (as published, Japanese): 24種類以上の漢方薬草ブレンド（個別のハーブ名は公式サイトに記載なし） - Official site: https://yuya-p.jp/ - Price (as published, Japanese): 平日 一般1,200円／会員1,000円（税込）、土日祝 一般1,400円／会員1,200円（税込）。シニア料金は平日一般1,100円・会員900円、土日祝一般1,200円・会員1,000円 - Information checked: 2026-08-24 - Summary: Fujisan Tennensui SPA Sauna Takanoyu is a day-use bathing facility in Hisazawa, Fuji City, Shizuoka. It has a permanent herbal steam sauna (50°C in the men's bath, 45°C in the women's), where the steam uses a blend of more than 24 kanpo medicinal herbs; the same herbal blend is also used in the women's pot bath. The facility also has a dry sauna, a high-temperature high-humidity sauna, and a barrel sauna. Bathing areas are separated by gender. Open from 9:00 on weekdays and 8:00 on weekends until 23:00. Operated by Yuya Planning Co., Ltd. ### TENET SAUNA (Aichi, 名古屋市中区) - URL: https://root-herb.com/en/sauna/tenet-sauna - Japanese name: TENET SAUNA - Private / shared: Private - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒460-0003 愛知県名古屋市中区錦3丁目17番5号 EXIT NISHIKI north 8F - Herbs used (as published, Japanese): よもぎ - Official site: https://tenetsauna.jp/ - Price (as published, Japanese): 60分 1名4,000円／2名7,000円、90分 5,000円／9,000円、120分 6,000円／11,000円、150分 7,000円／13,000円（すべて税込）。よもぎ蒸し4,000円（サウナ利用者は3,000円） - Information checked: 2026-08-23 - Summary: A fully private sauna one minute on foot from Sakae Station in Nagoya. Renovated from the former 'Private Sauna EXIT,' each private room has its own cold bath and takes one or two guests. The official site lists the use of yomogi (mugwort, described as a medicinal herb) as one of the facility's features, and yomogi steaming is offered as a paid extra. Open 12:00–04:00, reservation-only by phone or official LINE. ### Super Sauna Ichinomiya (Aichi, 一宮市) - URL: https://root-herb.com/en/sauna/super-sauna-ichinomiya - Japanese name: スーパーサウナ一宮 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒491-0932 愛知県一宮市大和町毛受字一本松31 - Official site: https://supersauna.jp/ - Price (as published, Japanese): 館内利用：平日2,000円／土日祝2,500円（時間無制限）。樽蒸しエリア：全日1,800円（2時間制）。税表記の明示なし - Information checked: 2026-08-24 - Summary: Super Sauna Ichinomiya is a men-only sauna facility in Yamato-cho, Ichinomiya City, Aichi Prefecture, scheduled to open on September 8, 2026, a 13-minute walk from Kannonji Station on the Meitetsu Bisai Line. It has five rooms — Netsu, Mei, Kiri, Mori and Taru — of which "Taru" is a herbal barrel-steam sauna inherited with formal permission from Tanabe Onnetsu Hoyojo in Ogaki, Gifu. Two large barrels made of Aomori hiba cypress are used, offered in two-hour sessions. Admission is 2,000 yen on weekdays and 2,500 yen on weekends and holidays; the barrel-steam area is 1,800 yen on all days. ### Shinoki Onsen Mantenbo (Aichi, 春日井市) - URL: https://root-herb.com/en/sauna/shinoki-onsen-mantenbo - Japanese name: 篠木温泉 満天望 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 愛知県春日井市下市場町3丁目13-1 - Herbs used (as published, Japanese): 和漢植物（内訳の明示なし） - Official site: https://kasugai-mantenbo.com/ - Price (as published, Japanese): 平日 大人入泉料 700円（朝割600円）／土日祝 800円（朝割700円）、岩盤浴 400円 - Information checked: 2026-08-23 - Summary: A day-use hot spring in Kasugai, Aichi, with five open-air baths and seven indoor baths. It has two saunas: a high-temperature sauna and a Kampo sauna, a steam sauna whose vapour is blended with Japanese-Chinese medicinal plants. A stone sauna lined with tourmaline, radium ore and other natural minerals is also available. The entrance is topped by a karahafu gable modelled on Dogo Onsen, and the bathhouse opens at 6 a.m. year-round. ### Kamoshiburo Kokonotsu (Shiga, 近江八幡市) - URL: https://root-herb.com/en/sauna/kamoshiburo-kokonotsu - Japanese name: 醸し風呂 九. - Private / shared: Private - Style: Yakuso (medicinal herb) steam - Herbs used (as published, Japanese): よもぎ（滋賀県産／プロデュース会社の実績ページ記載） / 藁 - Official site: https://wakatsu.jp/kokonotsu/sauna/ - Price (as published, Japanese): 貸切1万円／1名様（4名様まで、DAY USE SAUNA）／宿泊プランは宿泊料金＋1万円（1名様） - Information checked: 2026-08-23 - Summary: A private sauna at "Kokonotsu," the annex of Wakatsu, a whole-building rental ryokan in Omihachiman, Shiga. Housed in a converted earthen storehouse within a nationally designated Important Cultural Landscape, the low-temperature room is enclosed by clay walls and floored with straw, where guests lie down surrounded by the scent of medicinal herbs. It is heated by a wood stove, and the cold bath uses drawn well water. Day use is 10,000 yen for private hire (one person, up to four). ### Kusatsu Yumoto Suisyun (Shiga, 草津市) - URL: https://root-herb.com/en/sauna/suisyun-kusatsu - Japanese name: 草津湯元水春 イオンモール草津店 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒525-0067 滋賀県草津市新浜町300番地 イオンモール草津スポーツ＆レジャー棟 - Herbs used (as published, Japanese): 桂皮 / 唐辛子 / 生姜 / ほか計10種類の薬草（公式に品目の記載なし） - Official site: https://suisyun.jp/kusatsu/ - Price (as published, Japanese): 入浴料金 平日 大人（中学生以上）1,050円／土日祝 1,200円（税込）。小人（小学生）平日520円・土日祝600円、幼児（3歳〜小学生未満）平日260円・土日祝300円、2歳以下無料 - Information checked: 2026-08-24 - Summary: A large bathing complex in the Sports & Leisure building of AEON Mall Kusatsu, Shiga. It offers three saunas: a loyly sauna, a kampo herbal sauna, and a barrel sauna. The kampo herbal salt sauna blends ten herbs including cinnamon bark, chili pepper and ginger, and runs a "White Attraction" steam burst on the hour. The far-infrared sauna features loyly with water poured over sauna stones, and the barrel sauna allows self-loyly. Open 9:00-25:00, year-round. ### Nagono Retreat Hitoiki, Machiya Hotel (Shiga, 長浜市) - URL: https://root-herb.com/en/sauna/nagono-retreat-hitoiki - Japanese name: 長浜城下 町屋ホテル 和乃リトリートひといき - Private / shared: Private - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 〒526-0059 滋賀県長浜市元浜町17-2（受付棟）／十三番街棟：元浜町13-3 - Herbs used (as published, Japanese): 伊吹山周辺で採れた薬草 / 蓬（よもぎ） / 地元産ブレンドハーブ / 朝宮茶（茶葉） - Official site: https://cafe-inn-hitoiki.com/ - Price (as published, Japanese): 日帰り貸切サウナは7,980円〜9,980円（じゃらん遊び・体験からの完全事前予約制。「表参道棟 蔵」のみ日帰り可） - Information checked: 2026-08-23 - Summary: A dispersed machiya-townhouse hotel in Nagahama, Shiga, with three distinct private saunas. The kura sauna, converted from a roughly 200-year-old storehouse, keeps a bag of herbs on the stove; the 13th Street building uses herbs gathered around Mt. Ibuki; and the tea sauna hangs Asamiya tea leaves from Shiga. Guests pour their own loyly to release the aroma. Cold baths use free-flowing well water or a Shigaraki ceramic tub. Ten minutes on foot from the east exit of JR Nagahama Station. ### SPA&HOTEL Suisyun Matsuiyamate (Kyoto, 京田辺市) - URL: https://root-herb.com/en/sauna/suisyun-matsuiyamate - Japanese name: SPA&HOTEL水春 松井山手 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒610-0356 京都府京田辺市山手中央5-1 - Official site: https://suisyun.jp/matsuiyamate/sauna/ - Price (as published, Japanese): 入館料（ご入浴）平日：大人（中学生以上）1,300円（税込1,430円）／小人（小学生以下）600円（税込660円）、土・日・祝特定日：大人1,500円（税込1,650円）／小人700円（税込770円）。※大人料金には別途入湯税75円。朝風呂入館料（6時～9時）：大人1,200円（税込1,320円） - Information checked: 2026-08-24 - Summary: A day-spa and hotel complex in Kyotanabe, Kyoto, about a 7-minute walk from Matsuiyamate Station. The large public bath area has two saunas: a far-infrared Loyly sauna and a steam-type "Kampo Herbal Salt Sauna" that uses steam infused with Chinese herbal medicine plants. The official site explains the salt sauna method: warm up first, then lightly apply salt to the skin. The Loyly sauna runs an auto-loyly on the hour. The spa is open from 6:00 to 2:00, and private saunas are available separately. ### Sukkama Genji-no-Yu (Kyoto, 相楽郡精華町) - URL: https://root-herb.com/en/sauna/sukkama-genji-no-yu - Japanese name: スッカマ 源氏の湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 京都府相楽郡精華町光台1丁目5番地1 - Official site: https://genji-yu.com/sukkama/spa/ - Price (as published, Japanese): 入館料 大人（中学生以上）平日1,000円／土日祝1,100円、子ども（4歳～小学生）平日500円／土日祝550円、3歳以下無料（すべて税込） - Information checked: 2026-08-24 - Summary: A bathing facility in Seika Town, Kyoto Prefecture. It combines a Korean traditional hanjeungmak ("Sukkama") with a natural hot spring, and has garden-facing sauna rooms on both the men's and women's sides. According to the official website, the women's sauna area has a permanent kanpo herbal-salt steam sauna, alongside a high-temperature auto-loyly sauna and a cold-water bath. The men's side has a high-temperature auto-loyly sauna and a low-temperature self-loyly sauna. Admission is 1,000 yen for adults on weekdays (tax included), open 10:00-24:00. ### Asian healing & Herbal spa. Yakkao (Osaka, 大阪市北区) - URL: https://root-herb.com/en/sauna/herbal-spa-yakkao - Japanese name: Asian healing & Herbal spa. Yakkao（ヤッカオ） - Private / shared: Check with venue - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 〒530-0035 大阪市北区同心2丁目15-20 是空DOSHIN701 - Herbs used (as published, Japanese): コブミカン / ポンツクショウガ / 秋ウコン / レモングラス / シカカイ - Official site: https://yakkao.jp/ - Price (as published, Japanese): ハーブテントサウナ 60分 4,500円(税込)（20〜60分の間で自分のペースで入浴） - Information checked: 2026-08-23 - Summary: A Thai massage salon in Doshin, Kita-ku, Osaka, a five-minute walk from JR Sakuranomiya Station, open since 2020. Its menu includes a herbal tent sauna that uses herbs imported directly from Thailand as steam. Guests choose from three blends containing ingredients such as kaffir lime, Thai ginger (phlai), autumn turmeric, lemongrass and shikakai. The session is 4,500 yen (tax included) for 60 minutes, with 20 to 60 minutes spent inside at the guest's own pace. Reservation required. ### SPA&SAUNA Suisyun Hattori-Ryokuchi (Osaka, 豊中市) - URL: https://root-herb.com/en/sauna/suisyun-hattori-ryokuchi - Japanese name: SPA&SAUNA水春 服部緑地 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 〒561-0873 大阪府豊中市服部緑地1番68号 - Herbs used (as published, Japanese): 漢方薬草（具体的な生薬名は公式に記載なし） - Official site: https://suisyun.jp/hattori-ryokuchi/ - Price (as published, Japanese): SPA利用料 平日：大人90分コース1,400円（税込1,540円）／フリータイム1,800円（税込1,980円）、土日祝・特定日：90分コース1,800円（税込1,980円）／フリータイム2,200円（税込2,420円）。小人（12歳未満）平日800円（税込880円）／土日祝900円（税込990円）。天然温泉利用時は別途入湯税75円。岩盤ラウンジ料 平日+800円（税込880円）／土日祝+1,000円（税込1,100円） - Information checked: 2026-08-23 - Summary: A large bathing complex that had its grand opening on 5 June 2026. Alongside its main heat sauna and meditation sauna, the bathing floor keeps a permanent "Kanpo Herbal Salt Sauna". Abundant steam carries the scent of steamed Chinese-medicinal herbs throughout the room, and it is run as a mist sauna at a relatively low temperature so that those who dislike high heat can also use it. Natural salt is provided. About 8 minutes on foot from Ryokuchi-koen Station on the Kita-Osaka Kyuko line; open year-round. ### Thai Massage Salon naminone. (Osaka, 大阪市浪速区) - URL: https://root-herb.com/en/sauna/thai-massage-naminone - Japanese name: タイマッサージサロン naminone. - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 〒556-0022 大阪府大阪市浪速区桜川1-1-25 - Herbs used (as published, Japanese): プライ / カミン / レモングラス / ガパオ / カミンダム / クラチャイダム / コブミカン / ドッグサラピー / カミンオイ / バイラフン - Official site: https://naminone-87.amebaownd.com/ - Price (as published, Japanese): ハーブサウナ 60分￥7,200／45分￥5,400／30分￥3,600（オプション）※価格は全て税込み - Information checked: 2026-08-23 - Summary: A Thai massage salon in Sakuragawa, Naniwa-ku, Osaka, within a five-minute walk of JR Namba Station and the Osaka Metro Namba and Sakuragawa stations. It offers a Thai-style herbal sauna as a permanent menu item: guests sit on a chair inside a single-person tent and bathe in herbal mist. The herbs are organic Thai blends using pray, khamin, lemongrass, kaphrao and others, with four blends to choose from. Bookings combining it with traditional Thai massage or aroma treatment are also available. ### Naniwa Kenko Land Yu-Topia (Osaka, 東大阪市) - URL: https://root-herb.com/en/sauna/naniwa-yu-topia - Japanese name: なにわ健康ランド 湯～トピア - Private / shared: Private - Style: Vihta / whisking - Address (as published, Japanese): 〒577-0056　大阪府東大阪市長堂3-4-21 - Herbs used (as published, Japanese): オーク（楢・柏） / 白樺 / メープル（楓） - Official site: https://naniwa-utopia.com/ - Price (as published, Japanese): ウィスキング：ソロ（1名貸し切り）1枠 6,500円／グループ（2～4名）おひとりごとに 3,000円（税込・入館料等別途）。入館料金 おとな1,500円（燃料調整費120円込）、入館+深夜料金 3,150円 - Information checked: 2026-08-24 - Summary: Naniwa Kenko Land Yu-Topia is a 24-hour bathing facility in Higashiosaka, Osaka. In the men's "Forest Sauna," whisking using whisks (bundles of leaves) of oak, white birch, and maple is offered as a permanent service; during a booking the Forest Sauna room is reserved exclusively for the guest and a dedicated staff member performs the treatment. Prices are 6,500 yen per solo slot and 3,000 yen per person for groups, with the admission fee charged separately. Women's whisking sessions are held in the women's bath on selected dates. ### Herb no Iyai & Thai Massage flow (Osaka, 大阪市北区) - URL: https://root-herb.com/en/sauna/herb-no-iyai-flow - Japanese name: ハーブの癒い & タイマッサージ flow - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 大阪市北区南森町2-1-18-203 - Herbs used (as published, Japanese): 自家栽培ハーブ・薬草（具体名の記載なし） - Official site: https://www.flowherb.com/ - Price (as published, Japanese): ハーバルスチームサウナは他コースとの組み合わせで「＋1,500円」。本体コース例：タイ・ハーバルバランシングボディ 90分11,500円／120分14,500円、ハーバルボールセラピー 90分14,000円／120分17,000円（原文表記のまま、税表記の記載なし） - Information checked: 2026-08-23 - Summary: A private salon in a residential-building room in Minamimorimachi, Osaka. Its Thai and aroma bodywork courses can be combined with a tent-style herbal steam sauna that uses several kinds of steamed herbs. The official site states that home-grown herbs and medicinal plants are used, and also lists menus using herbal balls. The steam sauna is offered as an add-on to other courses (+1,500 yen). Open 10:00-21:00. ### Saito Tennen Onsen Sumire no Yu (Osaka, 茨木市) - URL: https://root-herb.com/en/sauna/sumire-no-yu - Japanese name: 彩都天然温泉すみれの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 〒567-0059 大阪府茨木市清水1-30-7 - Herbs used (as published, Japanese): 漢方（具体的な生薬名は公式に記載なし） - Official site: https://sumireno-yu.com/ - Price (as published, Japanese): ご入館（温泉）平日：大人（中学生以上）900円／子供（5才～小学生）450円、土日祝：大人1,000円／子供500円、すみれの日：大人750円／子供200円。岩盤浴（チムジルバンスパ爽健美汗）平日：大人800円／子供400円、土日祝：大人900円／子供450円。回数券10枚綴り8,000円 - Information checked: 2026-08-23 - Summary: A natural hot-spring facility in the Saito area of Ibaraki City, Osaka. Its bathing floor keeps a permanent "Kanpo Steam Sauna", presented as a low-temperature steam bath. The far-infrared sauna also runs automatic loyly and staff-led loyly sessions. A jjimjilbang stone-bathing area is attached. About 5 minutes' walk from Toyokawa Station on the Osaka Monorail Saito line; open year-round. ### Osaka Sauna DESSE (Osaka, 大阪市) - URL: https://root-herb.com/en/sauna/osaka-sauna-desse - Japanese name: 大阪サウナDESSE - Private / shared: Private & shared - Style: Herbal löyly / Vihta / whisking - Address (as published, Japanese): 〒542-0081 大阪府大阪市中央区南船場3-6-18 ケーズビル心斎橋4階 - Herbs used (as published, Japanese): ヴィヒタ（白樺） / 茶葉 - Official site: https://desse.osaka/ - Price (as published, Japanese): ショート1時間コース1,900円（6〜9時／11〜17時限定）、2時間コース2,900円、フリーコース3,900円、ナイト3時間3,900円（22時〜翌朝6時限定） - Information checked: 2026-08-23 - Summary: A bathhouse in Shinsaibashi, Osaka, with multiple sauna rooms. The "Kura" sauna is themed on the scent of vihta stored on a warehouse shelf, and the "Hanare" sauna is described as the room where the whisking service is offered alongside self-loyly. The "Cha" tea-room sauna runs an auto-loyly poured through a glass teapot with tea leaves. Open 11:00 to 9:00 the next morning. ### Tsurumi Ryokuchi Yumoto Suisyun (Osaka, 大阪市鶴見区) - URL: https://root-herb.com/en/sauna/suisyun-tsurumi-ryokuchi - Japanese name: 鶴見緑地湯元 水春 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒538-0036 大阪府大阪市鶴見区緑地公園1-37 - Herbs used (as published, Japanese): 漢方薬草（本場中国より直輸入、個別の品目名は公式サイトに記載なし） - Official site: https://suisyun.jp/tsurumi/ - Price (as published, Japanese): 入浴料金（税込）大人（中学生以上）平日1,100円／土日祝1,200円、小人（小学生）平日550円／土日祝600円、幼児（小学生未満）平日250円／土日祝310円。岩盤処利用料金（入浴とセット・税込）大人 平日1,000円／土日祝1,100円 - Information checked: 2026-08-24 - Summary: A natural hot spring facility next to Tsurumi Ryokuchi park in Osaka City. The men's bath has three saunas: infrared, meditation, and the kampo herbal salt sauna; the women's bath has two: infrared and the kampo herbal salt sauna with collagen lighting. The kampo herbal salt sauna is a relatively low-temperature steam mist room filled with vapor from Chinese medicinal herbs imported directly from China. At 30 minutes past each hour, the "White Attraction" releases a large burst of steam and the herbal aroma spreads through the room. ### Higashikohri Yumoto Suisyun (Osaka, 寝屋川市) - URL: https://root-herb.com/en/sauna/suisyun-higashikohri - Japanese name: 東香里湯元水春 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒572-0851 大阪府寝屋川市寝屋北町2-1 - Herbs used (as published, Japanese): 桂皮 / 唐辛子 / 生姜 - Official site: https://suisyun.jp/kohri/ - Price (as published, Japanese): 入浴 大人（中学生以上）平日1,000円／土日祝1,100円、小人500円／550円。岩盤浴は大人＋950円／＋1,050円（税込） - Information checked: 2026-08-23 - Summary: A super-sento in Neyagawa, Osaka. Alongside 16 baths including the natural hot spring "Choja-no-Yu" and a high-concentration carbonated bath, both the men's and women's bathing areas have a permanent "kampo herbal salt sauna." It uses kampo herbs imported directly from China together with mineral-rich salt, described as a blend of ten herbs including cinnamon bark, chilli and ginger. There is also a loyly sauna with auto-loyly on the hour, a self-loyly "meditation sauna" in the men's area, and six bedrock bath rooms. ### Yugenkyo Taihei no Yu Tadaoka (Osaka, 泉北郡忠岡町) - URL: https://root-herb.com/en/sauna/taihei-no-yu-tadaoka - Japanese name: 湯源郷 太平のゆ 忠岡店 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 大阪府泉北郡忠岡町忠岡北1丁目11-41 - Official site: http://www.taiheinoyu.jp/tadaoka/indexn.html - Price (as published, Japanese): 大人（中学生以上）一般750円／会員700円、小人400円（支払いは現金のみ） - Information checked: 2026-08-23 - Summary: A day-use bathing facility in Tadaoka, Osaka. The official "bath guide" page lists a kampo-herb steam sauna ("kan'yaku joro") as a permanent installation, alongside a far-infrared sauna, giving the facility two sauna types. It also has an open-air rock bath with carbonated water, a hinoki bath and a natural-water cold bath. Admission is 750 yen general / 700 yen for members, cash only. ### Minoo Yumoto Suisyun (Osaka, 箕面市) - URL: https://root-herb.com/en/sauna/suisyun-minoo - Japanese name: 箕面湯元 水春 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒562-0035 大阪府箕面市船場東3-13-11 ビーバーワールド箕面船場店2F - Official site: https://suisyun.jp/mino/ - Price (as published, Japanese): 入館料 大人（中学生以上）平日1,000円／土日祝1,100円。岩盤浴は入浴料に加算で大人 平日＋800円／土日祝＋900円（公式サイト表記のまま、税表記の明示なし） - Information checked: 2026-08-24 - Summary: A day-use hot spring facility in Minoo, Osaka Prefecture. It has three saunas, one of which is the Kanpo Herbal Salt Sauna, a steam sauna using Chinese herbal medicine imported directly from China; the official site describes it as a low-temperature steam sauna with a pleasant herbal aroma. The others are a Meditation Sauna with self-loyly and a Loyly Sauna with auto-loyly. Admission is 1,000 yen for adults on weekdays and 1,100 yen on weekends and holidays. A free shuttle bus runs from Kitasenri Station and Senri-Chuo Station. ### Yuraku Onsen (Osaka, 和泉市) - URL: https://root-herb.com/en/sauna/yuraku-onsen - Japanese name: 有楽温泉 - Private / shared: Shared - Style: Vihta / whisking - Address (as published, Japanese): 〒594-0071 大阪府和泉市府中町7-5-52 - Herbs used (as published, Japanese): 白樺（ヴィヒタ） - Information checked: 2026-08-23 - Summary: A public bathhouse in Izumi City, Osaka, a three-minute walk from JR Izumi-Fuchu Station. The operator's official Instagram profile introduces it as 'the first vihta sauna in southern Osaka,' incorporating vihta — bundles of birch branches — into the sauna. Infinity chairs have been added for open-air resting. Open 14:00–23:30, with its own parking lot. ### Healing Arts Amala (Hyogo, 芦屋市) - URL: https://root-herb.com/en/sauna/healing-arts-amala - Japanese name: ヒーリングアーツあまら - Private / shared: Private - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 〒659-0092 兵庫県芦屋市大原町7-22 - Herbs used (as published, Japanese): タイ王国チェンライ県産の無農薬ハーブ（具体的な薬草名は公式サイトに記載なし） - Official site: https://www.healingamala.com/course4/herbalsauna/ - Price (as published, Japanese): ハーブスチームサウナ 30分 都度払 1回 3,960円（税込） - Information checked: 2026-08-23 - Summary: Healing Arts Amala is a traditional Thai massage salon in Ashiya, Hyogo, a short walk from JR Ashiya Station, offering a herbal steam sauna. Herbs are simmered inside a tent and the steam envelops the whole body in the Thai style, using pesticide-free herbs from Chiang Rai Province, Thailand. The sauna is a single-person space, so guests can use it without being seen by others. It costs 3,960 yen (tax included) for 30 minutes and can be combined with menu items such as traditional Thai massage and Chi Nei Tsang. ### Natural Herbs AKARI Awaji Island - Meditation Gem Sauna (Hyogo, 洲本市) - URL: https://root-herb.com/en/sauna/natural-herbs-akari-awaji - Japanese name: 淡路島 Natural Herbs AKARI 瞑想ジェムサウナ - Private / shared: Private - Style: Herbal löyly - Address (as published, Japanese): 〒656-2124 兵庫県洲本市安乎町北谷1132 - Herbs used (as published, Japanese): 植物（ボタニカルロウリュ／種名は公式に明記なし） - Official site: https://akari.naturalherbs.jp/sauna/ - Price (as published, Japanese): 瞑想ジェムサウナ 60分 8,800円（税込） - Information checked: 2026-08-23 - Summary: A reservation-only sauna at a herb-farm retreat set in the woods of Awaji Island, Sumoto, Hyogo. The wood-fired dome sauna incorporates a "botanical löyly" that releases plant aromas, with eleven kinds of gemstones and minerals set into the dome and tuning-fork tones layered over the session. Capacity six; the Meditation Gem Sauna is 8,800 yen (tax included) for 60 minutes. Open 10:00-18:00, with irregular closing days. ### Shioashiya Onsen SPA Suisyun (Hyogo, 芦屋市) - URL: https://root-herb.com/en/sauna/suisyun-shioashiya - Japanese name: 潮芦屋温泉 SPA水春 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒659-0035 兵庫県芦屋市海洋町10-2 - Herbs used (as published, Japanese): 桂皮 / 唐辛子 / 生姜 / ほか計10種類の薬草（詳細非公開） - Official site: https://suisyun.jp/ashiya/ - Price (as published, Japanese): 入館料 平日 大人（中学生以上）1,700円（税込1,870円）／土日祝 1,900円（税込2,090円）。岩盤浴は別途 平日＋800円（税込880円）、土日祝＋900円（税込990円）。※サウナは入館料に含まれる。入湯税75円別 - Information checked: 2026-08-24 - Summary: A day-use hot spring facility on the waterfront in Ashiya, Hyogo. Alongside open-air baths and a stone sauna area, it offers three types of sauna. One of them, the "Kampo Herbal Salt Sauna," is a permanent room filled with steam infused with ten kinds of herbs including cinnamon bark, chili pepper and ginger, where salt is available for use. The others are an auto-loyly sauna and a meditation sauna in the men's bath only. Free shuttle buses run from JR Ashiya, Hanshin Ashiya and Hankyu Shukugawa stations. ### Natural Hot Spring Aguro no Yu (Hyogo, 神戸市長田区) - URL: https://root-herb.com/en/sauna/aguro-no-yu - Japanese name: 天然温泉 あぐろの湯 - Private / shared: Shared - Style: Thai-style herbal steam / Yakuso (medicinal herb) steam - Address (as published, Japanese): 兵庫県神戸市長田区南駒栄町1-6 - Herbs used (as published, Japanese): 漢方薬草（具体名の記載なし） / ヨモギ / チンピ / ローズマリー / ハッカ - Official site: https://aguro-no-yu.com/ - Price (as published, Japanese): 入浴料 大人（中学生以上）1,000円／小人（3歳～小学生）450円（※税込価格です。2歳以下無料。貸しタオル別途：レンタルバスタオル150円・販売タオル200円） - Information checked: 2026-08-24 - Summary: A natural hot spring bathhouse in Nagata Ward, Kobe, just outside Komagabayashi Station on the Kaigan subway line. It has 11 baths and two saunas, one of which is the "Kampo Herbal Sauna" — described on the official site as a mist sauna using natural crude drugs and herbs, kept at under 50 degrees Celsius. A salt sauna runs on days ending in 4 and 0 and every Thursday, and herb-steam sessions using mugwort, dried citrus peel, rosemary, mint and others are held irregularly. ### Wadayama no Yu Natural Hot Spring (Hyogo, 朝来市) - URL: https://root-herb.com/en/sauna/wadayama-no-yu - Japanese name: 天然温泉 和田山乃湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒669-5213 兵庫県朝来市和田山町玉置1087-1 - Official site: http://wadayamanoyu.com/ - Price (as published, Japanese): 岩盤浴は、入浴とセット料金で１，３２０円（公式FAQ記載）／入浴のみの料金表は公式サイト上は画像掲載のみでテキスト未確認 - Information checked: 2026-08-23 - Summary: A day-use hot spring in Asago, Hyogo, five minutes by car from JR Wadayama Station. Alongside free-flowing outdoor baths and a wide range of indoor baths, the official site describes two permanent saunas: a steam sauna in the indoor bathing area and a medicinal-herb (yakuso) sauna in the outdoor area. A stone-bed bath room is on the first floor. Open 11:00-21:30 (last entry 21:00), no regular closing days. Operated by Fujita Sangyo Co., Ltd. ### Notenburo Akane no Yu Himeji-Minami (Hyogo, 姫路市) - URL: https://root-herb.com/en/sauna/akane-no-yu-himeji-minami - Japanese name: 野天風呂 あかねの湯 姫路南店 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒672-8035 姫路市飾磨区中島2721 - Official site: https://akanenoyu.com/himeji/ - Price (as published, Japanese): 入館料 大人（中学生以上）平日850円／土・日・祝・特定日950円、小人（小学生以下）平日400円／土・日・祝450円、7〜9時入館 平日700円・土日祝800円（大汗房は別途690円） - Information checked: 2026-08-23 - Summary: A bathing facility in Shikama Ward, Himeji. Its official "open-air baths, indoor baths and sauna" page lists a permanent steam sauna called the "kanpo yakuso mushiburo" (herbal steam kiln) alongside the high-temperature stadium sauna. The gender-separated complex also has eight indoor baths including a carbonated spring, six open-air baths and the Daikanbo bedrock bath. It is about a 12-minute walk from Mega Station on the Sanyo Electric Railway and opens daily from 7:00 to 1:00. ### Fukurou no Yu (Wakayama, 和歌山市) - URL: https://root-herb.com/en/sauna/fukurou-no-yu - Japanese name: ふくろうの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 和歌山県和歌山市本町2丁目1番地 フォルテワジマ地下1階 - Herbs used (as published, Japanese): 和漢植物10種（内訳の明示なし） - Official site: https://www.fukurou-yu.com/ - Price (as published, Japanese): ご入浴のみ 大人1,200円（税込）／岩盤浴のみ 1,380円／ご入浴＋岩盤浴 1,760円 - Information checked: 2026-08-23 - Summary: A hot-spring facility on the basement floor of Forte Wajima in central Wakayama City, drawing water from 1,500 m underground and offering a free-flowing spring bath, tub bath, jet bath and seated bath. There are two saunas: a far-infrared sauna and a permanent Kampo herbal sauna in the women's bath, which uses a blend of ten Japanese-Chinese medicinal plants. A stone-bathing zone with four rooms using eight kinds of stone adjoins it. ### sauna rikkä (Hiroshima, 尾道市) - URL: https://root-herb.com/en/sauna/sauna-rikka - Japanese name: sauna rikkä ～植物と蒸気浴～ - Private / shared: Private - Style: Vihta / whisking - Address (as published, Japanese): 広島県尾道市向島町立花 - Official site: https://www.instagram.com/rikka_mukaishima/ - Price (as published, Japanese): サウナ利用料金は公式に非公開（予約方法・料金はInstagramハイライト内）。ウィスキング（オプション）は「マンツーマン:7,000円(税別) グループ:5,500円(税別)」〔出典＝Instagramプロフィールのリンク先 sauna-ikitai.com/saunas/84992 の施設情報〕 - Information checked: 2026-08-24 - Summary: A fully reservation-based private sauna in Tachibana, Mukaishima-cho, Onomichi City, Hiroshima. The operator uses the tagline "plants and steam bathing" and describes it on Instagram as "a sauna room filled with the scent of plants." It is a convection sauna cabin heated by a wood-burning stove with sauna stones, with self-loyly available. Whisking, using bundles of plant branches and leaves, is offered as a standing menu item, and certified whisking meisters are on staff. The cold bath uses free-flowing natural groundwater. ### Edo-buro at Kokokara, Sensuijima Island (Hiroshima, 福山市) - URL: https://root-herb.com/en/sauna/edo-buro-kokokara - Japanese name: 江戸風呂（人生感が変わる宿「ここから」／仙酔島） - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒720-0202 広島県福山市鞆町後地3371 - Herbs used (as published, Japanese): 海藻 / 蓬（よもぎ） / ビワ - Official site: https://www.sensuijima.jp/relax/ - Price (as published, Japanese): 2,970円（税込／タオル・バスタオル・専用着衣込、2025年7月1日改定）※宿泊者は無料。オプション：砂浴1,100円、五色炭酸塩パック1,100円 - Information checked: 2026-08-23 - Summary: A cave steam bath at the inn "Kokokara" on Sensuijima, an island off Tomonoura in Fukuyama, Hiroshima. It comprises three steam caves using seaweed, mugwort (yomogi) and loquat leaf respectively, plus an open-air seawater bath. Towels and the required bathing garment are included in the price; overnight guests enter free. Not open to children of elementary school age or younger. Summer-only sand bathing and a five-colour carbonate pack are offered as options. ### Onomichi Hirahara Onsen Poppo no Yu (Hiroshima, 尾道市) - URL: https://root-herb.com/en/sauna/onomichi-poppo-no-yu - Japanese name: 尾道平原温泉 ぽっぽの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒722-0018 広島県尾道市平原2丁目1-33 - Official site: https://poppo.info/ - Price (as published, Japanese): 入浴料 大人（中学生以上）平日860円／土日祝1,000円、小人（4歳～小学生）平日430円／土日祝500円、幼児（3歳以下）無料（漢方薬草サウナは入浴料に含まれる／別料金の記載なし） - Information checked: 2026-08-24 - Summary: A day-use hot spring facility in Hirahara, Onomichi City, Hiroshima Prefecture. Alongside an open-air bath, tsubo (jar) baths and a silk bath, the women's bathing area has a permanent "kanpo yakuso sauna" (herbal medicine sauna). According to the official website, it is a steam-type sauna using steam infused with components of seven Japanese-Chinese medicinal plants, offered to women only. The men's area has a far-infrared sauna and the women's area also has a salt sauna. Open 10:00-22:00 (last entry 21:30); admission is 860 yen for adults on weekdays. ### Kudamatsu Kenko Park (Yamaguchi, 下松市) - URL: https://root-herb.com/en/sauna/kudamatsu-kenko-park - Japanese name: くだまつ健康パーク - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 〒744-0021 山口県下松市大字平田448番地 - Herbs used (as published, Japanese): 薬草10種類（具体名は公式サイトに記載なし） / よもぎ - Official site: https://www.k-park.co.jp/park/sauna/ - Price (as published, Japanese): 入館料に含まれる。大人（中学生以上・税込）平日1時間まで770円／3時間まで1,130円／フリータイム1,370円、休日（土日祝）1時間まで830円／3時間まで1,190円。小学生500円（フリータイムのみ）、幼児（3歳以上）250円（フリータイムのみ） - Information checked: 2026-08-24 - Summary: A hot-spring leisure complex in Kudamatsu, Yamaguchi Prefecture. Alongside the Tsurugahama natural hot-spring view bath and bedrock baths, it offers three saunas: a herbal sauna scented with ten kinds of medicinal herbs in the men's bath, a mugwort (yomogi) steam sauna in the women's bath, and a rocky sauna with auto-loyly shared by both. Sauna use is included in the admission fee, and the facility has a deep standing-height cold bath and an outdoor-air cooling area with a sea breeze. ### Todaiji Betsuin Amidaji Temple Ishiburo (Stone Bath) (Yamaguchi, 防府市) - URL: https://root-herb.com/en/sauna/amidaji-ishiburo - Japanese name: 東大寺別院阿弥陀寺 石風呂 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 山口県防府市大字牟礼坂本1869 - Herbs used (as published, Japanese): 石菖（セキショウ） - Official site: https://www.c-able.ne.jp/~amidaji/ - Price (as published, Japanese): 一般開放：500円（薪代）／貸切体験プログラム：1回56,000円（10人参加で1人5,600円、JR防府駅からの往復タクシー代を含む） - Information checked: 2026-08-24 - Summary: The ishiburo (stone bath) at Amidaji, a branch temple of Todaiji in Hofu, Yamaguchi, is said to have been built by the priest Chogen for the people who gathered timber for Todaiji's reconstruction. It is an ancient-style steam bath in which a stone chamber is fired with firewood and the floor is spread with a medicinal herb called sekisho (Acorus gramineus). Volunteers of the Amidaji Ishiburo Preservation Society light the fire on the first Sunday of every month. In the experience program offered through the Hofu Tourism and Convention Association, participants can take part in lighting and tending the fire and in cutting the sekisho. ### Shimonoro Permanent (Tani no Sauna) (Tokushima, 三好市) - URL: https://root-herb.com/en/sauna/shimonoro-permanent - Japanese name: シモノロ・パーマネント（谷のサウナ） - Private / shared: Private - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 徳島県三好市池田町西山中塚1093 旧下野呂内小学校（〒778-0040） - Official site: https://shimonoro-p.jp - Price (as published, Japanese): 公式サイト（2025年6月時点のアーカイブ原文）：［SAUNA］谷のサウナ（2h）￥2,500＋￥250 消費税／［SAUNA・個室］谷の個室 ナイトパック ￥5,000＋￥500 消費税。※公式サイトは現在オフラインのため最新価格は未確認。第三者掲載（サウナイキタイ, 2026-08時点）では貸切制「1or2名さま 6,600円／2名、3名さま以上 2,750円／1名」 - Information checked: 2026-08-24 - Summary: A sauna at Shimonoro Permanent, housed in the former Shimonoroi Elementary School in Ikeda-cho, Miyoshi City, Tokushima. The official site describes it as a hybrid-style herbal sauna in which you bathe in hot steam mist scented with natural medicinal herbs. It is heated by a wood stove, with 1.5 to 2 hours' worth of firewood provided per session, and instead of a cold-water bath guests enter the river running right beside the site. Reservation-only, private rental use. ### Mori no Sauna (Forest Sauna) at B&B On y va & Experience (Tokushima, 名西郡神山町) - URL: https://root-herb.com/en/sauna/mori-no-sauna-onyva - Japanese name: 森のサウナ - Private / shared: Private - Style: Herbal löyly / Vihta / whisking - Address (as published, Japanese): 徳島県名西郡神山町神領字西野間5-1 - Herbs used (as published, Japanese): フェンネル / アップルミント / クロモジ / チャノキ - Official site: https://www.facebook.com/cafeonyvakamiyama/ - Price (as published, Japanese): 1〜4名 貸切20,000円（3時間）／5人目以降 1人あたり+5,000円（最大8名） - Information checked: 2026-08-24 - Summary: A fully private, one-group-only sauna in the mountains of Kamiyama, Tokushima Prefecture, operated alongside "B&B On y va & Experience," a guesthouse converted from a late-Edo-period sake brewery. Built by hand and completed in 2019, the hut uses wood-fired sauna stones over which water simmered with herbs from the owners' own farm — fennel, apple mint and others — is poured for löyly. Vihta are provided, and cooling down takes place in the natural water of the adjacent mountain stream. The site has neither electricity nor running water. ### Golden Time Takamatsu (Kagawa, 高松市) - URL: https://root-herb.com/en/sauna/golden-time-takamatsu - Japanese name: ゴールデンタイム高松 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam / Herbal löyly - Address (as published, Japanese): 香川県高松市瓦町2丁目1番地7 - Official site: https://goldentime-takamatsu.com/ - Price (as published, Japanese): フリータイム（10:30～24:00）2,800円、早朝サウナ（3:00～10:00）2,100円、3時間1,950円、2時間1,600円、90分1,400円、1時間1,200円、サウナ素泊まり3,600円〜 - Information checked: 2026-08-23 - Summary: A men-only sauna and capsule hotel in Takamatsu, Kagawa, two minutes on foot from Kawaramachi Station on the Kotoden line. It has three saunas: an IKI sauna, a Solo Sauna, and "Kukai no Yu / Yakuso Sauna," where guests sit in air carrying the components of medicinal herbs. Open 24 hours; free time is 2,800 yen and one hour is 1,200 yen. ### Teriha Spa Resort (Fukuoka, 福岡市東区) - URL: https://root-herb.com/en/sauna/teriha-spa-resort - Japanese name: 照葉スパリゾート - Private / shared: Shared - Style: Other herbal sauna - Address (as published, Japanese): 〒813-0017 福岡市東区香椎照葉5丁目2-15 照葉ガーデンスクエア内 - Official site: https://terihaspa.jp/spa - Price (as published, Japanese): スパコース（入浴のみ）大人・一般 ¥1,090〜¥1,640（料金日カレンダーA〜I区分／税込）、スパリゾートコース（岩盤＋入浴）大人・一般 ¥2,180〜¥3,280 - Information checked: 2026-08-24 - Summary: A large bathing complex in Kashii-Teriha, Higashi-ku, Fukuoka City. The second-floor bath areas each have a permanent "Herb Sauna" for men and for women; the official site describes it, after an interior renewal, as a room where "a softly spreading herbal aroma and a calm interior" come together. Other saunas include the Stadium Sauna and Royal Throne Sauna (men), and the Lumina Sauna and high-temperature sauna (women), alongside 17 types of baths such as rock baths and a high-concentration carbonated bath, plus 8 stone-spa rooms. Bathing hours are 8:00 AM to 2:00 AM the next day. ### Mifuneyama Rakuen Hotel "Rakan no Yu" (Saga, 武雄市) - URL: https://root-herb.com/en/sauna/mifuneyama-rakuen-rakan-no-yu - Japanese name: 御船山楽園ホテル らかんの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒843-0022 佐賀県武雄市武雄町大字武雄4100 - Herbs used (as published, Japanese): よもぎ（ベース） / 武雄で採れた自生の薬草（専門家が調合） - Official site: https://www.mifuneyama.co.jp/rakan.html - Price (as published, Japanese): 日帰り入浴（税込・利用時間2時間30分）／1部：平日 男性4,250円・女性4,850円、土日祝 男性4,850円・女性5,450円／2〜5部：平日 男性4,850円・女性4,250円、土日祝 男性5,450円・女性4,850円（予約制） - Information checked: 2026-08-23 - Summary: "Rakan no Yu" is the bathhouse at Mifuneyama Rakuen Hotel in Takeo, Saga Prefecture. Both the men's and women's baths have a herbal steam sauna. According to the official site, the herbs used are "wild herbs gathered in Takeo, blended by a specialist with mugwort (yomogi) as the base." It is a shared, gender-separated facility. Hotel guests may use it from 15:00 to 24:00 and from 6:00 to 10:30 the next morning; day-use bathing is by reservation only, in 2.5-hour time slots. ### Thai Herb Tent at i+Land nagasaki (Nagasaki, 長崎市) - URL: https://root-herb.com/en/sauna/iland-nagasaki-thai-herb-tent - Japanese name: i+Land nagasaki タイ式ハーブテント - Private / shared: Check with venue - Style: Thai-style herbal steam / Tent style - Address (as published, Japanese): 〒851-1201 長崎県長崎市伊王島町1丁目3277-7 - Herbs used (as published, Japanese): ショウガ / 白ウコン / 紫ウコン / 春ウコン / 秋ウコン / ボンツクショウガ / ユーカリプタス / コブミカン / タマリンド / アカシア / レモングラス / ミョウバン / リュウノウ - Official site: https://www.islandnagasaki.jp/spa/yumu-hurb/ - Price (as published, Japanese): 30分 1,500円（入浴時間30分／宿泊ゲストは館内スパ利用可、日帰り利用は別途入浴料） - Information checked: 2026-08-23 - Summary: The Thai Herb Tent sits inside i+Land nagasaki, a resort on Iojima Island in Nagasaki City. It is a tent-style steam sauna filled with steam containing more than 20 kinds of Thai herbs, including ginger, white turmeric, lemongrass, kaffir lime and tamarind. There are two locations, inside MINATO SPA Ganban TERRACE and inside Ark Land Spa; a session is 30 minutes for 1,500 yen and up to five people can enter together. It is about 45 minutes from JR Nagasaki Station by free shuttle bus. ### Capsule Hotel Sauna Sun (Nagasaki, 佐世保市) - URL: https://root-herb.com/en/sauna/capsule-hotel-sauna-sun - Japanese name: カプセルホテル・サウナサン - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒857-0876 長崎県佐世保市塩浜町6-15 - Official site: https://www.sauna-sun.com/ - Price (as published, Japanese): サウナご入泉：30分¥800／1時間¥1,600／2時間¥2,200／フリータイム¥3,300／ナイトサウナ（深夜24時〜朝7時・2時間）¥1,600（公式サイトに税表記の明記なし） - Information checked: 2026-08-24 - Summary: Capsule Hotel Sauna Sun is located in Shiohama-cho, Sasebo, Nagasaki. Its first-floor bathing area has a permanently installed high-temperature sauna and a medicinal-herb steam sauna, along with a cold bath and an "esthe" bath. The herb steam sauna is listed as standing equipment on the official facility page; the specific herbs used are not disclosed. Löyly and Aufguss sessions run on Thursdays, Saturdays and Sundays. Lodging is men-only, with mixed-gender days held a few times a month. The sauna is open from 7:00 to 24:00, with a night sauna slot afterwards. ### Inasayama Onsen Fukunoyu (Nagasaki, 長崎市) - URL: https://root-herb.com/en/sauna/inasayama-fukunoyu - Japanese name: 稲佐山温泉 ふくの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒852-8017 長崎県長崎市岩見町451-23 - Official site: https://fukunoyu.com/nagasaki/ - Price (as published, Japanese): 入浴料 大人 平日850円／土日・祝日900円、3歳～小学生450円（別途入湯税30円・12歳以上65歳未満）。入浴＋岩盤浴セット 平日1,300円／土日・祝日1,650円。漢方スチームは大浴場内のため入浴料に含まれる（追加料金の記載なし） - Information checked: 2026-08-24 - Summary: A natural hot spring bathing facility in Iwami-machi, Nagasaki City. Its main bathhouse sauna zone includes the "Kampo Steam x Meditation Sauna," a room filled with steam containing Chinese herbal (kampo) extract. On-site signage explains the concept of spending time in silence, and recommends combining it with the salt sauna, the far-infrared Stadium Sauna, and outdoor air bathing. The bedrock bath area "Fukujoudou" also offers loyly using aroma water. ### Yugaku no Sato Kunimi / Yugaku no Yakata (Nagasaki, 雲仙市) - URL: https://root-herb.com/en/sauna/yugaku-no-sato-kunimi - Japanese name: 遊学の里くにみ 遊学の館 - Private / shared: Shared - Style: Other herbal sauna - Address (as published, Japanese): 長崎県雲仙市国見町 - Official site: https://www.yuugakunosato.com/ - Price (as published, Japanese): 大人300円（税込）／中学生以下150円（税込）／3歳未満無料（日帰り入浴） - Information checked: 2026-08-23 - Summary: A large public bath, open for day-use bathing, inside a sports and lodging complex in Kunimi, Unzen City, Nagasaki. The men's and women's baths each have two saunas, and the official site lists three sauna types: gas/far-infrared, steam-herb, and Bonatherm/binchotan-charcoal. The herbal sauna is steam-based. The men's and women's sides swap weekly, and the bathhouse also has herbal-infusion and mineral-stone tubs. ### an sauna (Kumamoto, 葦北郡芦北町) - URL: https://root-herb.com/en/sauna/an-sauna - Japanese name: an sauna - Private / shared: Private - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒869-5305 熊本県葦北郡芦北町大字田浦町145番地(御立岬海水浴場内) - Herbs used (as published, Japanese): 地域（芦北）で採れた薬草（種類は公式に明記なし） - Official site: https://ansauna.the-panese.jp/ - Price (as published, Japanese): １人：4,000円(税込)/2時間半制 - Information checked: 2026-08-23 - Summary: A private sauna built from containers inside Mitatsumisaki beach park in Ashikita, Kumamoto. It comprises three units — sauna, cold bath and cafe — and the sauna room is finished in packed earth walls, filled with the scent of herbs gathered locally. Booking is required, with four sessions a day at 4,000 yen per person for 2.5 hours. Closed Wednesdays. The cafe is open to non-users and serves drinks such as mugwort enzyme milk. ### nimsauna (Thaiherb & Therapy nimspa) (Kumamoto, 熊本市中央区) - URL: https://root-herb.com/en/sauna/nimspa-nimsauna - Japanese name: ニムサウナ（nimsauna）／ニムスパ（nimspa） - Private / shared: Private - Style: Thai-style herbal steam - Address (as published, Japanese): 熊本県熊本市中央区城東町5-61（2026年8月17日に上通町10-18より本店へ移転） - Herbs used (as published, Japanese): プライ（ポンツクショウガ） / カミン（秋ウコン） / ピウマックルー（コブミカンの果皮） / バイマックルー（コブミカンの葉） / タックライ（レモングラス） / バイトゥーイ（バンタナス） / マッカム（タマリンド） / ソンポイ（アカシア） / ナッヤイ（タカサゴギク） / プラオヤイ / プラップルン（ハマユウ） / ユーカリプタス（ユーカリ） / ワンナンカム（春ウコン） / ワンサオロン / ワンチャックモッルーク（クスリウコン） / ビンセン＆カラブーン（竜脳・樟脳） - Official site: https://nimspa.com/pages/herbalsauna - Price (as published, Japanese): ソロサウナ 温め時間30分／3,000円（税込3,300円・お部屋時間50分）、ペアサウナ 温め時間30分／おふたりで6,000円（税込6,600円・お部屋時間50分）、延長+10分 1人当たり300円（税込330円）。回数チケット 3回7,700円／10回27,500円／25回55,000円。※ホットペッパービューティー掲載の新規クーポンはソロ2,750円 - Information checked: 2026-08-24 - Summary: A herbal sauna operated by nimspa, a Thai herb salon in Chuo-ku, Kumamoto City. It opened in 2022 in Kamitori-cho as "nimsauna" and relocated in August 2026 to the main salon, a detached house at 5-61 Joto-cho. It uses low-temperature herbal steam produced by simmering a blend of 16 pesticide-free Thai herbs, and has no cold plunge and no post-sauna shower. Solo and pair semi-private slots are offered by reservation. ### Kannawa Mushiyu (Beppu Municipal Steam Bath) (Oita, 別府市) - URL: https://root-herb.com/en/sauna/kannawa-mushiyu - Japanese name: 市営 鉄輪むし湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒874-0046 大分県別府市鉄輪上1組 - Herbs used (as published, Japanese): 石菖（セキショウ） - Official site: https://www.city.beppu.oita.jp/sisetu/shieionsen/detail11.html - Price (as published, Japanese): むし湯 700円（中学生以上入浴可能）／レンタル浴衣 220円／貸しバスタオル 210円 - Information checked: 2026-08-24 - Summary: A municipal hot-spring facility run by the city of Beppu. It is said to have been founded in 1276 (Kenji 2, Kamakura period) by the monk Ippen. The floor of the roughly eight-tatami stone chamber is heated by hot-spring steam and covered with sekisho (Acorus gramineus), a medicinal herb that grows only along clear streams; bathers lie down on it wearing a yukata. Men's and women's chambers are separate, each accommodating up to four people at a time. The poet Ujo Noguchi wrote of the scent of sekisho here. ### Beppu Kannawa Onsen Yamanami no Yu (Oita, 別府市) - URL: https://root-herb.com/en/sauna/yamanami-no-yu - Japanese name: 別府鉄輪温泉やまなみの湯 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 〒874-0845 大分県別府市北中7-2 ダイヤモンドビル1F - Official site: https://diamondgroup.co.jp/yamanaminoyu/beppu/ - Price (as published, Japanese): 入浴料（サウナ込・税込）平日：大人（中学生以上）630円／小人（4才〜小学生）250円／幼児無料、土日祝：大人780円／小人300円／幼児無料。入浴回数券（11枚綴り）6,000円。参考：家族湯（全11室）平日2,300円・土日祝2,600円（60分）、サウナ付き個室「桜の湯」4,900円（90分） - Information checked: 2026-08-24 - Summary: A hot spring bathhouse in Kitanaka, Beppu, Oita. Its two large bathing areas, "Yama no Yu" and "Umi no Yu," alternate between men and women daily, and Umi no Yu has a permanent "Jusan Kanpo Sauna" that uses kampo (Chinese herbal medicine). The facility offers six saunas in total, including an auto-loyly IKI sauna, a salt sauna, a self-loyly sauna, and a Nordic-style aroma sauna. Admission is 630 yen for adults on weekdays and 780 yen on weekends and holidays. Open from 12:00 to 8:40 the next morning, and 24 hours on weekends and holidays. ### Toksen Vihara (Kagoshima, 鹿児島市) - URL: https://root-herb.com/en/sauna/toksen-vihara - Japanese name: トークセン・ビハーラ - Private / shared: Private - Style: Thai-style herbal steam / Yakuso (medicinal herb) steam / Tent style - Address (as published, Japanese): 〒890-0063 鹿児島県鹿児島市鴨池2丁目20-5 - Herbs used (as published, Japanese): プライ / カミン / ワンサオローン（オプション） / その他タイハーブのブレンド / よもぎ蒸しは20種類以上のハーブから選択 - Official site: https://toksenvihara.com/ - Price (as published, Japanese): 「よもぎ蒸し／ハーブスチームサウナ 30分／¥3,500〜」（税表記の記載なし） - Information checked: 2026-08-23 - Summary: Toksen Vihara is a salon offering traditional Thai bodywork in Kamoike, Kagoshima City. Alongside Toksen and Thai massage, it offers a herbal steam sauna as a regular menu item. Guests sit inside a single-person tent filled with steam from simmered Thai herbs such as plai and turmeric (kamin), a style the salon describes as deriving from "yu fai," Thai postpartum care. Yomogi (mugwort) steam is also available. Prices start at 3,500 yen for 30 minutes. Reservation-preferred; open Tuesday to Sunday, 10:00-22:00. ### Midori Onsen (Kagoshima, 鹿児島市) - URL: https://root-herb.com/en/sauna/midori-onsen - Japanese name: みどり温泉 - Private / shared: Shared - Style: Yakuso (medicinal herb) steam - Address (as published, Japanese): 鹿児島県鹿児島市岡之原町130 - Official site: https://midorionsen.shopinfo.jp/ - Price (as published, Japanese): 大人460円、小人150円、6歳以下80円、回数券（10回）4,200円 - Information checked: 2026-08-23 - Summary: A natural free-flowing hot spring in Okanohara, Kagoshima City. The official "sauna guide" page lists a herbal steam sauna, one of three sauna types along with a low-temperature salt-stone sauna and a high-temperature sauna. The bathing area separately offers a herbal bath blending eight herbs including safflower and Japanese angelica. Open 5:30 to 23:00, year-round; adults 460 yen. ### Yakusou (Medicinal Herb) Sauna Tent by Waraku Chiryoin, Yoron Island (Kagoshima, 大島郡与論町) - URL: https://root-herb.com/en/sauna/waraku-yakusou-sauna-tent - Japanese name: 薬草サウナテント（和楽治療院） - Private / shared: Private - Style: Yakuso (medicinal herb) steam / Herbal löyly / Vihta / whisking / Tent style - Address (as published, Japanese): 固定住所の記載なし。「天候・風向きによって体験場所が異なります。事前にお問い合わせください。」（島内の浜で開催） - Herbs used (as published, Japanese): ホーリーバジル / ヨロン島産ハーブ（蒸留水として使用・種別の明記なし） - Official site: https://www.yorontou.info/experience/7230.html - Price (as published, Japanese): 2時間 22,000円（税込）／3時間 27,500円（税込）／延長1時間 5,500円（税込）。ロウリュウ用水（薬草水）・薬草ヴィヒタ・薬草茶・ハーブウォーター込み、現金のみ - Information checked: 2026-08-24 - Summary: A medicinal-herb sauna tent run by Waraku Chiryoin on the beaches of Yoron Island. The loyly water is made with herb distillate produced on Yoron, and the vihta is bundled with a bouquet of holy basil. The price includes the herbal loyly water and herbal vihta as well as herbal tea and herb water. The tent is booked privately for up to 4-5 people, and after the sauna you can dip into the sea and cool down outdoors with an ocean view. The location changes with the weather and wind direction, so confirm it when booking by phone. ### BUNA SAUNA (Okinawa, 国頭郡大宜味村) - URL: https://root-herb.com/en/sauna/buna-sauna - Japanese name: BUNA SAUNA（ブナサウナ） - Private / shared: Private - Style: Thai-style herbal steam / Herbal löyly - Address (as published, Japanese): 沖縄県国頭郡大宜味村喜如嘉2083 喜如嘉翔学校 - Herbs used (as published, Japanese): 月桃 / シークヮーサー / レモングラス / フーチバー（よもぎ） - Official site: https://kijoka-sho.jp/buna-sauna/ - Price (as published, Japanese): 2時間制 1名8,800円／2名11,000円／3名12,100円（4〜6名は1名増ごと+1,100円）、貸切24,200円（3〜6名・10〜16時）※沖縄テレビOKITIVE記事の記載。公式予約ページは現在「選択可能な予約メニューがありません」で料金未掲載のため公式未確認 - Information checked: 2026-08-23 - Summary: A sauna inside Kijoka Sho Gakko, a complex in Kijoka, Ogimi Village in northern Okinawa. The official site describes it as "a low-temperature herbal sauna using an abundance of herbs growing wild in the area," and the official Instagram calls it "a private herbal sauna using wild, pesticide-free herbs." The room runs at 65-75C; loyly is poured with herb water made from shikuwasa, lemongrass and fuchiba (mugwort), and getto (shell ginger) leaves are hung inside. Swimwear required, reservation only. ## The RootHerb Index (20 entries) List: https://root-herb.com/en/herbs ### Ginger (ขิง / キング) — ショウガ - URL: https://root-herb.com/en/herbs/ginger - Group: RootHerb (rhizome) - Species: Zingiber officinale (Zingiberaceae) - Part used: Rhizome - Aroma: Warm, peppery, spicy - Summary: The quintessential RootHerb, cherished across the world's traditional medicines as a symbol of the power stored beneath the soil — and a rhizome familiar even in Japan. ### Turmeric (ขมิ้น / カミン) — ウコン（ターメリック） - URL: https://root-herb.com/en/herbs/turmeric - Group: RootHerb (rhizome) - Species: Curcuma longa (Zingiberaceae) - Part used: Rhizome - Aroma: Earthy, faintly bitter, with a spicy finish - Summary: A vivid orange rhizome — "kamin" in Thai. Indispensable to traditional medicine and home cooking, and a central presence in the herbal sauna. ### Galangal (ข่า / カー) — カー（ガランガル） - URL: https://root-herb.com/en/herbs/galangal - Group: RootHerb (rhizome) - Species: Alpinia galanga (Zingiberaceae) - Part used: Rhizome - Aroma: Sharp and bright, with a citrus-like pungency - Summary: A rhizome related to ginger, yet with a citrus-like aroma and a refreshing pungency. Indispensable to tom yum goong — a star supporting player of Thai cuisine and traditional medicine. ### Plai (ไพล / プライ) — プライ - URL: https://root-herb.com/en/herbs/plai - Group: RootHerb (rhizome) - Species: Zingiber cassumunar (Zingiberaceae) - Part used: Rhizome - Aroma: Spicy and cooling, reminiscent of ginger - Summary: The rhizome at the heart of Thailand's traditional herbal compress ball (luk prakop) — a uniquely Thai RootHerb that symbolizes the culture of herbal sauna and massage. ### Fingerroot (กระชาย / クラチャイ) — クラチャイ（フィンガールート） - URL: https://root-herb.com/en/herbs/fingerroot - Group: RootHerb (rhizome) - Species: Boesenbergia rotunda (Zingiberaceae) - Part used: Rhizome - Aroma: Earthy and distinctive, with a faint bitterness - Summary: A uniquely shaped rhizome that grows in slender, finger-like clusters. Sometimes called "Thai ginseng," it has been cherished in the context of traditional nourishment. ### Licorice (ชะเอมเทศ / チャエム・テート) — リコリス（甘草） - URL: https://root-herb.com/en/herbs/licorice - Group: RootHerb (rhizome) - Species: Glycyrrhiza glabra (Fabaceae) - Part used: Root and rhizome - Aroma: Naturally sweet, like sugar - Summary: A RootHerb whose root holds a natural sweetness, as its name suggests. A "sweet root" prized in traditional medicine since antiquity, across both East and West. ### Lemongrass (ตะไคร้ / タクライ) — レモングラス - URL: https://root-herb.com/en/herbs/lemongrass - Group: Green Herb (leaf / fruit) - Species: Cymbopogon citratus (Poaceae) - Part used: Leaf and stalk - Aroma: Fresh, lemony citrus - Summary: A green herb loved worldwide for its fresh, lemon-like aroma. Called "takhrai" in Thailand, it is essential to cooking, tea, and the sauna. ### Kaffir Lime Leaf (ใบมะกรูด / バイマックルー) — バイマックルー（コブミカンの葉） - URL: https://root-herb.com/en/herbs/kaffir-lime-leaf - Group: Green Herb (leaf / fruit) - Species: Citrus hystrix (Rutaceae) - Part used: Leaf - Aroma: Sharp citrus, stronger than lemon or lime - Summary: A star supporting player of Thai cuisine that scents soups and curries. A refreshing green herb with a citrus aroma stronger than lemon or lime. ### Kaffir Lime (มะกรูด / マックルー) — マックルー（コブミカンの実） - URL: https://root-herb.com/en/herbs/kaffir-lime - Group: Green Herb (leaf / fruit) - Species: Citrus hystrix (Rutaceae) - Part used: Fruit (peel) - Aroma: Rich citrus, with a faint bitterness - Summary: A distinctive citrus with knobbly skin. Its richly aromatic peel has been loved in cooking, herbal care, and as a steaming ingredient in the sauna. ### Pandan Leaf (ใบเตย / バイトーイ) — パンダンリーフ - URL: https://root-herb.com/en/herbs/pandan - Group: Green Herb (leaf / fruit) - Species: Pandanus amaryllifolius (Pandanaceae) - Part used: Leaf - Aroma: Sweet and mellow, like vanilla - Summary: An aromatic leaf loved for its sweet, vanilla-like scent. Used to flavor sweets and drinks, it has long been cherished in everyday life. ### Tamarind Leaf (ใบมะขาม / バイマカーム) — タマリンドの葉 - URL: https://root-herb.com/en/herbs/tamarind-leaf - Group: Green Herb (leaf / fruit) - Species: Tamarindus indica (Fabaceae) - Part used: Leaf - Aroma: Fresh, with a gentle sourness - Summary: A profile of the leaf of tamarind, the fruit famed for its sourness. With a distinctive fresh tang and aroma, it has been used in cooking and herbal care. ### Japanese Mugwort — ヨモギ（蓬） - URL: https://root-herb.com/en/herbs/yomogi - Group: Herb from Japan - Species: Artemisia indica var. maximowiczii (Asteraceae) - Part used: Leaf (the crude drug gaiyo is the leaf and twig) - Aroma: Green and clean, led by cineole - Summary: A perennial in the daisy family that grows wild across Japan. It is the "mochigusa" of kusa-mochi rice cakes, the raw material of moxa, and a herb whose name comes up often in Japan's yakuso saunas. ### Japanese White Birch — シラカンバ（白樺） - URL: https://root-herb.com/en/herbs/shirakaba - Group: Herb from Japan - Species: Betula platyphylla (Betulaceae) - Part used: Leafy twigs and bark - Aroma: Soft and green, as the leaves revive in hot water - Summary: A deciduous tree known for its white bark. Bundles of its leafy twigs make the sauna vihta — though the Finnish original uses closely related species, and the Japanese white birch stands in for them here. ### Cinnamon Bark — 桂皮（ケイヒ・シナモン） - URL: https://root-herb.com/en/herbs/keihi - Group: Herb from Japan - Species: Cinnamomum cassia (Lauraceae) - Part used: Bark of the trunk - Aroma: Sweet and warm, from cinnamaldehyde - Summary: The bark of a laurel-family tree native to southern China. It is the crude drug "keihi" of the Japanese Pharmacopoeia, and a common component of kanpo herb blends in Japanese saunas. ### Kuromoji (Japanese Spicebush) — クロモジ - URL: https://root-herb.com/en/herbs/kuromoji - Group: Herb from Japan - Species: Lindera umbellata (Lauraceae) - Part used: Twig and leaf - Aroma: Sweet and cool, from linalool and cineole - Summary: A deciduous shrub in the laurel family, endemic to Japan. It is the wood of the kuromoji pick served with wagashi, and its twigs and leaves carry a sweet, cool scent. ### Eucalyptus — ユーカリ - URL: https://root-herb.com/en/herbs/eucalyptus - Group: Herb from Japan - Species: Eucalyptus globulus (Myrtaceae) - Part used: Leaf - Aroma: Sharp and clearing, from cineole - Summary: A tall tree in the myrtle family, native to Australia. Eucalyptus oil, distilled from its leaves, is listed in the Japanese Pharmacopoeia and is a scent often used in löyly water in Japan. ### Japanese Angelica — トウキ（当帰） - URL: https://root-herb.com/en/herbs/toki - Group: Herb from Japan - Species: Angelica acutiloba (Apiaceae) - Part used: Root (crude drug) / stem and leaf (bath) - Aroma: Strong and green, reminiscent of celery - Summary: A perennial in the carrot family growing wild in the mountains of central and northern Honshu. It is the Japanese Pharmacopoeia crude drug toki, and a component of kanpo blends in yakuso saunas. ### Japanese Mint — ハッカ（薄荷） - URL: https://root-herb.com/en/herbs/hakka - Group: Herb from Japan - Species: Mentha canadensis var. piperascens (Lamiaceae) - Part used: Terrestrial part (stem and leaf) - Aroma: Intensely cooling, from l-menthol - Summary: A perennial in the mint family found from Hokkaido to Kyushu. In the 1930s Japan supplied about 70% of the world's mint, and Kitami was the centre of it. ### Houttuynia — ドクダミ - URL: https://root-herb.com/en/herbs/dokudami - Group: Herb from Japan - Species: Houttuynia cordata (Saururaceae) - Part used: Terrestrial part, collected in flower - Aroma: A strong, distinctive smell from decanoyl acetaldehyde, which fades on drying - Summary: A perennial familiar from Japanese gardens, known for its white cross-shaped "flowers." Its crude-drug name is juyaku, and it is listed in the Japanese Pharmacopoeia. ### Shell Ginger — ゲットウ（月桃） - URL: https://root-herb.com/en/herbs/getto - Group: Herb from Japan - Species: Alpinia zerumbet (Zingiberaceae) - Part used: Leaf - Aroma: Sweet and soft, from the oil in the leaf - Summary: A perennial in the ginger family growing in Okinawa and southern Kyushu. In Okinawa it is called sannin, and it is best known as the leaf that wraps muchi rice cakes. ## Glossary (14 terms) List: https://root-herb.com/en/glossary ### RootHerb® — ルートハーブ® - Category: The RootHerb® concept - URL: https://root-herb.com/en/glossary/rootherb - Definition: RootHerb® is an Eastern-born wellness concept that focuses on the “root” of herbs and spices grown underground and brings their components into daily life. A registered trademark advocated by the Japan Root Herb Association (JRHA), it organizes the roots long valued in traditional and folk medicine (ginger, turmeric, galangal, etc.) — in contrast to aroma-led green herbs. Eastern traditional medicine is said to have treated these roots as “warming” crude drugs. ### Green Herb — グリーンハーブ - Category: The RootHerb® concept - URL: https://root-herb.com/en/glossary/green-herb - Definition: Green Herb is a collective term for herbs enjoyed for the “aroma” of their leaves and flowers — lemongrass, mint, basil, and the like. The Japan Root Herb Association (JRHA) uses the term in contrast to RootHerb®, which stores compounds in the root, organizing herbs into those “enjoyed for aroma” and those “used through the root.” ### Ichibutsu-zentai (whole-food principle) — 一物全体 - Category: The RootHerb® concept - URL: https://root-herb.com/en/glossary/ichibutsu-zentai - Definition: Ichibutsu-zentai is an Eastern dietary-wellness idea that eating a food in its entirety — skin, root, and fiber included — brings good nutritional balance. The Japan Root Herb Association (JRHA) promotes this idea as the foundation of RootHerb®, which uses a root’s components together with its skin and fiber. ### Mibyō (pre-symptomatic state) — 未病 - Category: Tradition & wellness - URL: https://root-herb.com/en/glossary/mibyou - Definition: Mibyō is a concept in Eastern medicine for the in-between state that is neither illness nor wellness. The word comes from the classics of Eastern medicine, and the Japan Root Herb Association (JRHA) includes it in this glossary to explain the Eastern view of everyday care that lies behind RootHerb®. ### Op Samun Phrai (อบสมุนไพร) — オップサムンプライ - Category: Herbal sauna - URL: https://root-herb.com/en/glossary/op-samun-phrai - Definition: Op samun phrai is the traditional Thai herbal sauna; the name means “to steam with medicinal herbs” (op = to steam, samun phrai = medicinal herbs). In this bathing culture, fresh herbs rise with the steam. Studies of Thai traditional medicine report that the herbal steam bath has been understood as a way to warm the body, raise a sweat, and clear the skin and airways. The Japan Root Herb Association (JRHA) researches its origins and sites across Thailand. ### Herbal Sauna — ハーバルサウナ - Category: Herbal sauna - URL: https://root-herb.com/en/glossary/herbal-sauna - Definition: A herbal sauna is a sauna enjoyed by letting medicinal herbs rise with the steam. In Thailand it is called “op samun phrai,” using ginger, turmeric, lemongrass and more. The Japan Root Herb Association (JRHA) introduces its culture and history to Japan through on-site training in Thailand. ### Luk Prakop / Herbal Compress Ball (ลูกประคบ) — ルークプラコップ（ハーブボール） - Category: Herbal sauna - URL: https://root-herb.com/en/glossary/luk-prakop - Definition: Luk prakop is a traditional Thai herbal ball (warm compress): medicinal herbs wrapped in cloth, steamed, and pressed to the body. RootHerbs such as plai and turmeric are central to it, and it is deeply tied to the cultures of Thai massage and the herbal sauna — one of the traditional techniques covered in JRHA on-site training. ### Rhizome — ライゾーム（根茎） - Category: Herbs & plants - URL: https://root-herb.com/en/glossary/rhizome - Definition: A rhizome is a modified plant stem that grows horizontally underground and stores nutrients — ginger, turmeric, galangal, and plai being typical examples. RootHerb®, advocated by the Japan Root Herb Association (JRHA), rests on the traditional idea that a plant’s components concentrate in this rhizome. ### Galangal (ข่า) — ガランガル（カー） - Category: Herbs & plants - URL: https://root-herb.com/en/glossary/galangal-kar - Definition: Galangal (kha / ข่า in Thai) is a rhizome in the ginger family — a RootHerb that resembles ginger yet carries a citrus-like, refreshing aroma and pungency. Essential to Thai dishes such as tom yum goong, it has also been used in traditional medicine and the herbal sauna. Featured in the JRHA RootHerb Index. ### Turmeric (ขมิ้น) — カミン（ウコン／ターメリック） - Category: Herbs & plants - URL: https://root-herb.com/en/glossary/kamin-turmeric - Definition: Kamin (ขมิ้น) is the Thai word for turmeric. A vivid orange rhizome, it has long been cherished as a central presence in Thai traditional medicine, home cooking, and the herbal sauna — one of the representative RootHerbs handled by the Japan Root Herb Association (JRHA). ### Plai (ไพล) — プライ - Category: Herbs & plants - URL: https://root-herb.com/en/glossary/plai - Definition: Plai (ไพล) is a rhizome in the ginger family — a RootHerb representing Thailand that lies at the heart of the herbal ball “luk prakop” and the herbal sauna. With a cooling, spicy aroma, it is inseparable from Thai warm-care culture. Featured in the JRHA RootHerb Index. ### Thai Traditional Medicine (แพทย์แผนไทย) — タイ伝統医療 - Category: Tradition & wellness - URL: https://root-herb.com/en/glossary/thai-traditional-medicine - Definition: Thai traditional medicine is a folk and traditional wellness system long handed down in Thailand, combining medicinal herbs, massage, and warming practices. The herbal sauna “op samun phrai” is part of it. The Japan Root Herb Association (JRHA) researches this culture and history on site and introduces it in the context of RootHerb®. ### Root Herbalist — ルートハーバリスト - Category: Association & certification - URL: https://root-herb.com/en/glossary/root-herbalist - Definition: Root Herbalist is a Thailand-based certification awarded to those who have studied the history, theory, and practice of Thai RootHerbs. On the Japan Root Herb Association (JRHA) on-site training in Thailand, participants may earn it (optional) through a one-day course and exam led by local instructors. ### Japan Root Herb Association — JRHA（日本ルートハーブ協会） - Category: Association & certification - URL: https://root-herb.com/en/glossary/jrha - Definition: JRHA (Japan Root Herb Association) is the body that advocates the RootHerb® concept and conducts research, education, and on-site training on traditional medicine and herbal-sauna culture in Thailand and beyond. Its aim is to spread, in Japan, the difference between aroma-led green herbs and RootHerbs used through the root. ## Frequently asked questions (20) List: https://root-herb.com/en/faq ### What is RootHerb®? RootHerb® is an Eastern-born wellness concept that focuses on the “root” of herbs and spices grown underground and brings their components into daily life. A registered trademark advocated by the Japan Root Herb Association (JRHA), it organizes the “roots beneath the soil” long valued in traditional and folk medicine — in contrast to aroma-led green herbs (lemongrass, mint, etc.). Ginger, turmeric, galangal, and licorice are typical examples. ### How is a RootHerb different from an ordinary herb? Ordinary herbs are mostly “green herbs” enjoyed for the aroma of leaves and flowers (lemongrass, mint, basil, etc.). RootHerb®, by contrast, focuses on the rhizome stored beneath the soil — ginger, turmeric, galangal, licorice and the like. The difference is which part is used, leaf and flower or root and rhizome; the latter has long been used in the traditional medicine and home cooking of Southeast Asia. The Japan Root Herb Association (JRHA) researches and raises awareness of this difference. ### Why does JRHA focus on the “root”? JRHA distinguishes herbs that have been used for their aroma from herbs that have been used through the root, and aims to introduce the culture of the latter in Japan. In the traditional medicine of Thailand and Southeast Asia, the rhizome is treated as a central material and appears across cooking, bathing and the herbal sauna. Together with the idea of “ichibutsu-zentai” (eating a food in its entirety brings good nutritional balance), JRHA works to spread knowledge of RootHerb®. ### What is a herbal sauna? The herbal sauna is a traditional Thai bathing practice called “op samun phrai (อบสมุนไพร),” in which you bathe in the steam of medicinal herbs. Fresh herbs — lemongrass, kaffir lime, turmeric, galangal, pandan and more — are boiled in a large pot and their steam is fed into the sauna room. Studies of Thai traditional postpartum care report that the herbal steam bath has been understood as a way to warm the body, raise a sweat, and clear the skin and airways. The Japan Root Herb Association (JRHA) researches and educates about its culture and history. ### What is op samun phrai? What does the word mean? Op samun phrai (อบสมุนไพร) is a term from Thai traditional medicine: “op” means to apply steam to the body, and “samun phrai” means medicinal herbs (poetically associated with the spirits of the forest). It roughly means “to bathe in the steam of the forest’s herbs.” It is the original name for the herbal sauna, used long before the Western word “sauna” reached Thailand, and deeply rooted in local life. ### How has the herbal sauna been used? In Thai tradition, the herbal sauna (op samun phrai) has continued across the country as an extension of everyday bathing and as a postpartum custom. Under the four-element view of Thai traditional medicine (earth, water, wind, fire), childbirth is held to unsettle the fire element in particular, and the postpartum practice of yu fai (การอยู่ไฟ) is described as aiming to warm the body back into balance. The herbal steam bath is one part of it, reported as having been understood as a way to warm the body, raise a sweat, and clear the skin and airways. The blend of herbs differs by region and by venue, and the recipes are handed down. The Japan Root Herb Association (JRHA) presents it not as a medical practice but as “time to open the senses and meet your own body,” to bring into modern life. ### How does a herbal sauna differ from an ordinary sauna? Where Finnish saunas and Japanese steam saunas center on “heat and humidity,” the Thai herbal sauna (op samun phrai) makes “herbal steam” the star. Fresh herbs are boiled in a large pot and you bathe in that steam, so the room fills with their aroma. Each facility differs in its herb blend and steam method (wood-fired / gas / industrial), and each is tied to its local culture. ### How can I join JRHA’s on-site training in Thai traditional medicine? The Japan Root Herb Association (JRHA) runs the “Thai Herbal Sauna Tour” once a year — an on-site herb school and facility study programme in Phuket and Bangkok. The third edition runs Oct 31 – Nov 5, 2026 (4 nights, 6 days), limited to 8 people on a first-come basis, at about ¥168,000. It covers visits to five Phuket facilities, history and knowledge in Bangkok, and — for those who wish — earning the local Root Herbalist certification. It starts and ends locally in Thailand; flights and overseas travel insurance are arranged by each participant. Apply via the form on this site (/apply-tour). ### What is the Thai Root Herbalist certification and how do I get it? Thai Root Herbalist is a one-of-a-kind specialist certification in Thai RootHerbs, earned through a one-day intensive course and exam led by local instructors. Only participants of the JRHA-organized Thai Herbal Sauna Tour (the on-site training programme) may take it. The basic course has three parts: (1) history of the Thai herbal sauna, (2) Thai RootHerb theory, and (3) Thai RootHerb practice. It is a practical credential for running a herbal sauna at a salon, spa, or treatment studio. ### Can I join the programme with no herbal-sauna experience? Newcomers are very welcome. It suits anyone curious about Thai traditional medicine or about plants and the culture around them, those who want to learn customs rooted in a place, and those who want to study deeply while taking in the atmosphere on the ground. The coordinators (Koichi Suzuki, Nana Uchida, Satoshi Ryuto) support the whole itinerary on site. As a small-group programme by the Japan Root Herb Association (JRHA), it answers individual questions with care. ### What are the main herbs used in Thai traditional medicine? Typical herbs in the Thai herbal sauna (op samun phrai) include turmeric (kamin ขมิ้น), galangal (kha ข่า), lemongrass (takhrai ตะไคร้), the kaffir lime fruit and leaf (makrut มะกรูด / bai makrut ใบมะกรูด), pandan leaf (bai toey ใบเตย), and tamarind leaf (bai makham ใบมะขาม). The Japan Root Herb Association (JRHA) systematically researches and shares their species, origins, and how they are used. ### What kind of herb is turmeric? Turmeric (Thai: kamin ขมิ้น; Curcuma longa) is a rhizome in the ginger family and a RootHerb® indispensable to both Thai traditional medicine and Thai cooking. It contains the vivid orange pigment curcumin, and is marked by an earthy aroma with a faint bitterness. It has been used widely — in cooking, the herbal sauna, topical preparations, and herbal teas. Thai folk practice is recorded as applying it to the skin as a body mask, and as turning to it for stomach upsets, skin troubles, coughs and aching joints. The Japan Root Herb Association (JRHA) introduces turmeric as “a herb that helps like a forest spirit.” ### What is galangal (kha)? How is it different from ginger? Galangal (Thai: kha ข่า; Alpinia galanga) is a perennial in the ginger family and a relative of ginger, but a RootHerb® with a sharper, more citrus-like aroma. Its scent underpins tom yum goong and much of Thai cooking, and it is one of the herbal sauna’s key herbs. In Thailand it is reported as having been treated as a carminative for digestive complaints such as bloating. The Japan Root Herb Association (JRHA) introduces galangal’s own aroma and uses, distinct from ginger. ### What kind of herb is lemongrass? Lemongrass (Thai: takhrai ตะไคร้; Cymbopogon citratus) is a perennial grass marked by a fresh, lemon-like aroma. In Thailand it has been used across daily life — in cooking (tom yum), in herbal teas, and in the herbal sauna. It is also recorded as a mosquito repellent and as a herb turned to in fever and pain, and the citral that makes up around 80% of its essential oil is traditionally described as a calming scent. In the Thai luk prakop compress, a formulation recorded in the peer-reviewed literature includes its leaves and sheaths at about 10%. On the Japan Root Herb Association (JRHA) on-site training, it is experienced as fresh-lemongrass steam at facilities in Phuket. ### How do I become a JRHA individual member, and what do members receive? Individual membership dues are ¥5,000 a year (supporting members ¥30,000). After applying via the dedicated form and transferring the dues to SBI Sumishin Net Bank, a membership number is issued. Members receive (1) the members’ newsletter, (2) admission to events at member rates, and (3) other member services. Membership is open to licensed medical and care professionals, researchers and students in related fields, and interested members of the public. ### What kind of organization is JRHA, and what is its purpose? The Japan Root Herb Association (JRHA) is a general incorporated association founded in May 2024, headquartered in Tokyo, corporate number 5011105011042. It studies and introduces the Thai steam bath tradition known as the herbal sauna (op samun phrai), and the root herbs — RootHerb® — at the centre of it. Activities: research, certification, training RootHerb instructors, seminars and workshops, exchange with overseas bodies, and cultivation on its own and partner farms. Representative director: Satoshi Ryuto; directors: Nana Uchida and Koichi Suzuki. ### Where is JRHA located, and who represents it? The Japan Root Herb Association (JRHA), headquartered in Tokyo, was founded in May 2024; its corporate number is 5011105011042. Its representative director is Satoshi Ryuto; directors are Nana Uchida and Koichi Suzuki; and its special advisor is Tadateru Isono (head of the Thailand Samun Phrai Project). Its partner is the Thai Herbal Massage School, Bangkok. It shares its activities on Instagram at @jrha_official. ### Which herbal-sauna facilities in Phuket do you recommend? Five facilities the Japan Root Herb Association (JRHA) visited in November 2024: (1) Kathu Herb Sauna (a paradise deep in the jungle), (2) TIRA Herbal Sauna & Spa (a refined space full of the owner’s heart), (3) Ao-Chalong Sauna (a wood-fired steam purist), (4) ILAND Herbal Spa (a resort-style luxury sauna), and (5) Kao Lan Sauna (a local public sauna with an air reminiscent of Helsinki’s oldest). See JRHA’s Field Notes for details on each. ### Why is Phuket called a mecca for herbal saunas? Phuket is one of Thailand’s leading areas where, in the dry season (October–March) when fresh herbs are at their peak, a wide range of herbal-sauna facilities — from luxury to local — gather. Each differs in its steam method (wood-fired / gas / industrial) and in the blend and origin of its herbs. The Japan Root Herb Association (JRHA) holds on-site training in Phuket each year, offering a rare chance to learn systematically, right down to behind the scenes. ### How can I bring RootHerbs into everyday life? The Japan Root Herb Association (JRHA) suggests bringing RootHerb® into daily life by (1) cooking — ginger, turmeric, galangal in stews and stir-fries; (2) herbal tea — simmering the roots; (3) herbal bath — herbs as a bath additive; and (4) aroma — dried roots for scent. The key is “ichibutsu-zentai” (eating a food in its entirety): using the whole root, skin and fibre included. ## Journal (17 articles) List: https://root-herb.com/en/news - 2025-12-21 [JRHA featured in the book “Sekai Yokujo Kenbunroku”](https://root-herb.com/en/news/media-sekai-yokujou-kenbunroku): The association's work appears in the latest book by Ayana Kobayashi, a Finland-based researcher of sauna culture and the first Japanese holder of the Saunamestari title. Published by Gakugei Shuppansha on 21 December 2025. - 2026-05-04 [Applications open — the third Thai Herbal Sauna Tour, 2026](https://root-herb.com/en/news/2026-thai-herbal-sauna-tour): Five facilities in Phuket plus Bangkok: facility visits, sauna sessions and the Thai Root Herbalist certification in one programme. Eight places only. - 2025-03-22 [(Closed) 2025 Thai Herbal Sauna Tour](https://root-herb.com/en/news/2025-thai-herbal-sauna-tour-closed): Archive of the second tour's call for applications: 1–6 November 2025, five Phuket facilities, Bangkok, and the Root Herbalist certification. Eight places, ¥143,000. - 2024-07-22 [(Closed) 2024 Thai Herbal Sauna Tour](https://root-herb.com/en/news/2024-thai-herbal-sauna-tour-closed): Archive of the second-year call for applications: five Phuket facilities and the origins of the herbal sauna. - 2025-03-19 [Kaffir lime fruit — woven into daily life in Thailand](https://root-herb.com/en/news/herb-kaffir-lime-fruit): While researching Thai traditional medicine and herbal sauna culture we saw how deeply the kaffir lime (มะกรูด / Citrus hystrix) is rooted in everyday life. - 2025-03-14 [Bai makrut, the kaffir lime leaf — woven into daily life in Thailand](https://root-herb.com/en/news/herb-kaffir-lime-leaf): While researching Thai traditional medicine and herbal sauna culture we saw how deeply bai makrut (ใบมะกรูด / Citrus hystrix) is rooted in everyday life. - 2025-03-12 [Pandan leaf — woven into daily life in Thailand](https://root-herb.com/en/news/herb-pandan-leaf): While researching Thai traditional medicine and herbal sauna culture we saw how deeply the pandan leaf (ใบเตย / Pandanus amaryllifolius) is rooted in everyday life. - 2025-03-07 [Lemongrass — woven into daily life in Thailand](https://root-herb.com/en/news/herb-lemongrass): While researching Thai traditional medicine and herbal sauna culture we saw how deeply lemongrass (ตะไคร้ / Cymbopogon citratus) is rooted in everyday life. - 2025-03-05 [Tamarind leaves — woven into daily life in Thailand](https://root-herb.com/en/news/herb-tamarind-leaf): While researching Thai traditional medicine and herbal sauna culture we saw how deeply the tamarind leaf (ใบมะขาม) is rooted in everyday life. - 2025-02-26 [Kha, galangal — woven into daily life in Thailand](https://root-herb.com/en/news/herb-galangal-kar): While researching Thai traditional medicine and herbal sauna culture we saw how deeply kha (galangal / Alpinia galanga) is rooted in everyday life. - 2025-02-20 [Kamin, turmeric — woven into daily life in Thailand](https://root-herb.com/en/news/herb-turmeric-kamin): While researching Thai traditional medicine and herbal sauna culture we saw how deeply turmeric — kamin (ขมิ้น) on the market signs — is rooted in everyday life. - 2025-02-19 [Field note — Kao Lan Sauna](https://root-herb.com/en/news/visit-kao-lan-sauna): A neighbourhood herbal sauna whose sign reads “op samun phrai” in Thai — the word for a herbal sauna that was in use long before “sauna” reached Thailand. - 2025-02-19 [Field note — ILAND Herbal Spa](https://root-herb.com/en/news/visit-iland-herbal-spa): A large resort facility in Phuket with hotel pick-up, one staff member per guest, and herbal sauna, jacuzzi and massage usually taken as a set. - 2025-02-19 [Field note — Ao Chalong Sauna](https://root-herb.com/en/news/visit-ao-chalong-sauna): A concrete box with an aluminium door: a typical Thai sauna room, except that the tiled bench sits a step higher and the ceiling is low. - 2025-02-19 [Field note — TIRA Herbal Sauna & Spa](https://root-herb.com/en/news/visit-tira-herbal-sauna-spa): A sauna built in white and wood, known locally as TIRA Sauna, shaped by what its owner, Madame Tira, wanted it to be. - 2025-02-19 [Field note — Kathu Herb Sauna](https://root-herb.com/en/news/visit-kathu-herb-sauna): A red sign at the end of a jungle path reads “herb sauna” in Thai. Inside: steam, citrus, and a single tier of seating. - 2025-02-15 [Five herbal saunas in Phuket — a round-up](https://root-herb.com/en/news/five-saunas-overview-2024): Five very different herbal saunas visited on one trip: Kathu, TIRA, Ao Chalong, ILAND and Kao Lan. Note: the Journal was written in Japanese. The English pages carry a summary of each article and link to the Japanese original.