A For years, the average consumer's familiarity with far-infrared came from the use of infrared heat lamps which produce radiant heat. Then, in the mid 1960's NASA discovered that a number of mineral oxides were also capable of generating FIR waves. After using various FIR products in the space program, no further developments occurred at NASA using this technology. However, according to Sang Wang, author of Reverse Aging, the Japanese saw other uses.

Today, over 150 patents have been granted to the Japanese for products such as: FIR saunas, FIR ovens that replace microwaves, FIR panels for incubators in maternity wards as well as FIR wave-generating ceramics and fabrics. According to Dr. Tsu-Tsair Oliver Chi, in his summation on the mechanism of action of infrared devices tuned to the human body, "...these rays are selectively absorbed by tissues needing a boost in their output. The internal production of infrared energy is associated with a variety of healing responses and may require a boost to a maximum level to insure the fullest healing response possible in a tissue which is being repaired. After boosting a tissue's level to its maximum, the remaining rays pass onward harmlessly. This phenomenon is called 'resonant-absorption.'"