- About 42% of sunlight are far infrared. Far infrared will not damage your skin like ultraviolet. FIR can activate the function of our body to achieve a variety of health effects.
- However, FIR were easily absorbed by CO2 and moisture of the air and we can hardly receive any FIR after blocked by our clothes.
- Thus, we must seek for more direct, more convenient and more secure FIR sources.