History: the birth of the Japanese Sauna Iyashi Dome

HISTORY
OF THE
JAPANESE PRACTICE OF SUNA RYOHO

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.

THE
BIRTH OF
THE IYASHI DÔME

During a trip to Japan with his father, Shogoro Uemura discovered the ancient ritual of ‘Suna Ryoho’… But also the family’s collaboration with a group of researchers working on the mechanisms of cell regeneration, particularly in response to the effects of radioactivity on the body, as well as a polluted and stressful environment that clogs our cells and, consequently, our metabolism. As we now understand, these imbalances can affect the body to the point of altering our DNA (epigenetics).
Gradually, one thing became clear: the body cannot function normally if it is saturated with toxic substances.

Detoxification thus became an essential solution.

It was against this backdrop that Iyashi Dôme® was founded in 2004, with the aim of offering an approach that supports the body’s natural processes, drawing inspiration from these discoveries and promoting access for all to treatments that benefit both body and mind through the long-wave infrared rays of the Japanese Iyashi Dôme sauna.

Discover our Japanese sauna

AND...

Iyashi Dôme® introduced the term ‘Japanese sauna’ in 2005, following the first articles by journalists who were discovering this previously unseen device for the first time.
Since then, Iyashi Dôme® has been committed to offering a rigorous approach, centred on the safety of users and practitioners, whilst incorporating a genuine concept of service inspired by Japan.
This commitment is reflected in standards that go beyond current regulations, as well as in the implementation of rigorous studies, supported by medical publications and journals.
At the same time, Iyashi Dôme develops new concepts and products, in collaboration with recognised partners, to offer a comprehensive, coherent and holistic approach to care.
To support this approach, Iyashi Dôme® works with a committee of health experts, driven by a constant desire to go further.

JAPANSESE AUTHENTICITY OVER TIME

2025

The Oteire device received the ‘H. Pierantoni Innovation Award’ at the 2025 New Aesthetics Awards.

2024

Design, manufacture and launch of the new Japanese sauna, 6th generation: the Iyashi Dome Oteire.

Iyashi Dôme Oteire - Sauna japonais

2018

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 Osoji® (floral water beverages)

2017

Partnership with the Oshibori concept®: launch of our Oshiboris

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

2016

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

2012

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.

2011

Creation and production of the Iyashi Dôme RenaiSens V3

2009

New partnership with Tanita® (body composition analyser)

2008

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

2006

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

The 1^st Iyashi Dôme Japanese sauna is set up in Paris

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

2004

Creation of the brand Iyashi Dôme, creation and production of the Iyashi Dôme V1: ID Metal.

attika

|

HISTORY OF THE JAPANESE PRACTICE OF SUNA RYOHO

THE BIRTH OF THE IYASHI DÔME