Formosa Stone Spa offers dry take on traditional hot springs

福湯岩盤浴（Formosa Stone Spa）提供傳統溫泉的乾式體驗

TAIPEI (Taiwan News) — Formosa Stone Spa offers a wellness experience that combines heated mineral stones with cooling chambers, inviting guests to relax through a cycle of sweat, stretch, and chill.

As Taiwan’s only 24-hour Japanese-style stone spa chain, Formosa Stone Spa introduces the concept of “dry hot springs,” or ganban-yoku — a waterless alternative to traditional hot springs popular in Japan. Visitors recline on heated natural stone slabs kept at controlled temperatures, which the spa says help promote circulation and perspiration.

The spa currently operates two branches in Hsinchu and Taichung, according to Formosa Stone Spa. Both locations offer rest areas and multiple themed rooms featuring natural stones, with temperatures ranging from 10 to 80 degrees Celsius.

The spa told Taiwan News it recommends guests follow a specific sequence. Sessions typically begin in the “Fong Lyu” and “Dai Yu” rooms, which provide milder heat and space for gentle stretching.

The experience then progresses to the “Run Jhu” room, where water is poured onto heated rocks to generate steam and waves of heat. Temperatures can reach 70–80 C, designed to stimulate the sympathetic nervous system and encourage a deeper sweat.

Afterward, visitors relax in the “Chih Yan” room, reclining on blocks of Himalayan pink salt. The session concludes in the “Ying Syue” cooling room — a snow chamber maintained at 10–15 C — offering a refreshing end to the cycle.

Admission costs NT$750 (US$25) for two hours or NT$850 for three hours. The fee includes spa clothing, towels, and access to all rooms.

Ganban-yoku promotes sweating through exposure to natural stones and gentle, consistent heat. Unlike regular perspiration, this method is said to draw sweat primarily from the skin’s oil layer, reducing protein and mineral loss. The result is sweat that is generally odorless.

Temperatures are kept close to the body’s natural range, and the duration of each session can be adjusted based on individual health conditions. With proper moderation and good health, stone spa bathing can be enjoyed year-round.

Unlike conventional spas, stone spa bathing involves lying directly on heated stone slabs. Towels are provided for comfort, but first-time visitors may need time to adjust to the sensation of direct contact with the stone.

Some individuals may experience mild side effects such as leg soreness or drowsiness after their first session, likely due to the high calorie expenditure. These effects typically subside with rest.