Far Infrared Rays (FIR) are part of the sun’s light spectrum that is invisible to the human eye. The complete spectrum of sunlight consists of visible light that ‘we’ see and invisible rays like Xrays, microwave, infrared, gamma,etc. that we are unable to see.
Far infrared light is a form of thermal energy. This is the warmth you feel penetrate your skin when you are outside in the sun. Far infrared light should not be confused with ultraviolet light which causes sunburn and damage to your skin. Far infrared does not cause sunburn or skin damage.
