They say You may stay in far infrared sauna / home sauna to rejuvenate your skin, get rid of toxins by metabolic processes and reduce chronic fatigue… but for Adrenal suppression, Hemophilia, Multiple sclerosis, SLE patients… Far Infrared sauna heaters for the first time were developed in 1965 by the doctor Tadashi Ishikava who works at the Fuji Medical’s R&D department. Only after 14 years of thorough medical researches this technology was allowed for the public.