In Japan, there is an age-old practice of detoxifying the body called “Suna Ryoho”, especially in the Southern region of Ibusuki. For over 300 years, the Japanese have been taking traditional hot sand baths, burying themselves in the sand of certain natural hot springs. This form of therapy eliminates toxic build-up through sweat and cleanses the body. In these special places, heat is diffused by underground sources of hot water and the sun, warming this sand with its precious properties.

This natural source of far infrared radiation inspired Shogoro Uemura, who wondered how he could bring this tradition back to France in the simplest way possible through technology which masters the “Suna Ryoho” principle that the Japanese are so fond of. And so the company Iyashi Dôme was created in November 2004 in order to provide each and every one with access to beneficial treatments for the body and mind, thanks to infratherapy and the Iyashi Dôme Japanese sauna.

sauna japonais suna ryoho
Shogoro Uemura


In 2004, Shogoro Uemura was an entrepreneur in the field of environmental diagnosis. During a trip to Japan to visit his family, Shogoro Uemura’s father introduced him to the work he was doing in collaboration with a group of researchers studying the principle of cellular regeneration subsequent to the harmful effects not only of radioactivity on the body, but also the impact of cell overload on our metabolic system induced by a polluted and stressful environment.

The evidence of detox was clear to Shogoro Uemura, because the body cannot function normally if it is saturated with toxic substances and, as we now know, this is tied to DNA modifications (Epigenetics).


Iyashi Dôme developed the name “Japanese sauna” back in 2005.

Ever since, Shogoro Uemura has been working to reassure users and practitioners not only by bringing the Japanese notion of service while taking safety further than applicable standards and ensuring optimal results by conducting studies that measure outcomes with medical publications. But also, by developing new concepts and products with quality French partners to create unique and holistic treatment versatility. To do so, Iyashi Dôme works hand-in-hand with a health expert committee in order to constantly push boundaries further!

Iyashi Dôme RenaiSens




INPI invention patent for our catalyst that eliminates toxins from the device.

– Creation and production of the second Iyashi Dôme model: the ID FIRST V1.

– Development and launch of the Iyashi Dôme Osojis® (triangle bag-packaged floral water beverages).

Osojis Iyashi Dôme


– Partnership with the Oshibori concept®: launch of our Oshiboris.

– Development of bespoke Set&See sensory music for Iyashi Dôme sessions.

Oshiboris Iyashi Dôme


– Creation and production of the Iyashi Dôme V5 with the company LEMI®: ID RenaiSens with new controller.

– Design of the O2 device: an oxygen-enriched air diffusion system with essential oils.


– Creation and production of the Iyashi Dôme V4: ID RenaiSens with its electronic controller.

– Partnership with the company RKF®: creation of a bespoke line of linen for our Japanese saunas.

Peignoir Iyashi Dôme RKF


Creation and production of the Iyashi Dôme RenaiSens V3


New partnership with Tanita® (body composition analyser)


Launch of clinical trials measuring the unique benefits provided by the Iyashi Dôme.

logo Iyashi Dôme études cliniques


– Creation and production of the Iyashi Dôme RenaiSens V2 with the ID Sens option.

– The 1st Iyashi Dôme Japanese sauna is set up at Stéphan Jaulin in Paris.

When the term “Japanese sauna” is used, the description 100% matches the Iyashi Dôme, who indeed created the term.