Iyashi Dôme is the only company to have carried out MEASURED clinical trials in the fields of detox, slimming and anti-ageing in order to prove the benefits of infratherapy delivered by its treatment devices.

Our relationship with our partners is of upmost importance and it wasn’t conceivable for us to promote a device and benefits without clinical trials confirming the results of Japanese High Technology, of the Iyashi Dôme Japanese sauna.

Les études cliniques mesurées Iyashi Dôme
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A leader in infratherapy, thanks to our unique, measured clinical trials!


“For centuries, the Japanese have been burying themselves in the sand of various hot springs in order to purify their bodies and eliminate their toxins. The heat (far infrared radiation emitted by the sun) warms the sand and gives it specific properties that are precious to the body’s wellbeing. This tradition is carried on today with Iyashi Dome’s far infrared technology.”

Up to 1,200 ml of sweat eliminated per session

Les études Iyashi Dôme
Les études Iyashi Dôme

Clinical trial – A clinical trial* was carried out in Switzerland on 22 patients. Samples of sweat were taken from each patient’s body after a session of Iyashi Dome lasting 25 minutes. The sweat was taken using a Pasteur pipette from the patient’s chest and arms. No metal utensil was used when taking sweat samples. The Laboratory MGD in Geneva (Switzerland) analysed the sweat and then compared the samples with the analysis of urine samples from the same patients. “Analysis of the chart in figure 2 shows that the Iyashi Dome increases the amount of toxic heavy metals eliminated such as Strontium, Barium, Nickel, Lead, Molybdenum, Tellurium, Chromium, Cobalt, Arsenic, Cadmium, Aluminium and Copper. This chart shows that the quantities of heavy metals are higher than the average quantity of 514µg/l, showing particular effectiveness with regards to the elimination of Aluminium. […]

Conclusion – “Analysis of 2ml of sweat taken from patients who underwent Iyashi Dôme Far Infrared sessions lasting 25 minutes demonstrates that there is a real impact on the elimination of heavy metals from the body. Simultaneous analyses of urine samples show the heavy metals are essentially eliminated through sweat. The action is particularly efficient with regards to the elimination of Aluminium.”

Iyashi Dôme
* P. Blanchemaison, F. Morillon, R. Clement, The Detox Programme.
Advantages of the Iyashi Dôme far infrared device in the removal of heavy metals.
Genesis 2012, n°167, 20-23 (Medical Journal of Gynaecology, n°167 May 2012).


The deep sweating experienced during an Iyashi Dôme session is the equivalent of running 20 kilometres. The production of up to 1,200 ml of sweat results in the average elimination of 600 kilocalories at each session.

An average of 600 kilocalories eliminated at each session!

Les études cliniques mesurées
Les études cliniques mesurées

Clinical trial – Global results are analysed by the summation of before and after scores. Evaluation protocol for Iyashi Dome weight loss.

18 volunteers, aged 25 to 57.

No change whatsoever in nutrition or physical activity was prescribed during the protocol.

Results obtained with the device indicate that the Iyashi Dome is efficient for weight loss, skin quality enhancement, relaxation and reduction of the appearance of fine lines. The results reveal a 100% satisfaction rate of the volunteers who participated in the treatment programme.

  • Over 2 months, at a rate of 2 sessions a week lasting 30 minutes each (i.e.: 16 sessions), the average weight loss was 3.4kgs – weight loss of up to 6kgs was observed.
  • Reduction of 1 to 2 dress sizes.
  • Loss of 2 to 3% body fat.

Trial performed with Class 3 medical measuring device TANITA


Skin ageing is a natural and inevitable process that manifests itself through the appearance of wrinkles, fine lines and dark spots, a decrease in skin firmness and elasticity as well as a loss of radiance. Skin ageing involves both intrinsic factors (genetic and hormonal…) and extrinsic factors (stress, climate, pollution, smoking…). In addition to cosmetics, there are other non-invasive methods that fight against the effects of skin ageing, such as the Iyashi Dôme.

Up to +60% skin elasticity

La détox Iyashi Dôme
La détox Iyashi Dôme

Clinical trial – […] The study was carried out on 13 patients, from 31 to 63 years old, with skin phototype between II and IV according to the Fitzpatrick Classification Scale. The 8 Iyashi Dome sessions each lasted for 30 minutes and were carried out twice a week over four weeks.

In order to take the research further, biometric measurements were carried out on both the face and body, using the Cutometer® to measure skin elasticity […], the Corneometer® to measure skin hydration and the Mexameter® to verify the level of haemoglobin and melanin concentrations in the skin […]. Finally, the Iyashi Dome’s actions on dermis thickness of the face and body were visualized and measured using High Frequency Doppler Echography. These measurements establish the increase or decrease in thickness of the dermis and, therefore, of the collagen and elastin fibres that compose the skin’s connective tissue.

Conclusion – […] The far infrared rays emitted by the Iyashi Dome® are effective in improving the skin’s quality and physiological properties […]. More specifically, after 4 weeks’ use the product improves skin density with an increase in the thickness of the dermis of both face and body, improves facial skin radiance, decreases facial skin roughness, decreases facial wrinkle volume, improves skin hydration in the face and body, improves the complexion (evenness and luminosity of facial skin), improves skin elasticity and firmness of the body and face, stimulates skin microcirculation and reduces the signs of skin ageing. The product was judged to be effective on all skin phototypes and considered as being pleasant to use.