Infrared light is part of the Sun’s invisible spectrum of light that has the ability to penetrate the human tissue. Infrared heat therapy uses these infrared light characteristics to heat the body directly rather than just the air. The experience of an infrared sauna is similar to sunbathing, which gives you the radiant heat that is all your own. The infrared heat penetrates your skin, giving you that wonderful natural warmth. Unlike sunbathing, infrared heat therapy is completely healthy and safe. You can relax in an infrared sauna and it will never cause your skin to burn.