Unlike a traditional sauna, infrared saunas donʼt heat the air around you. Instead, they use infrared lamps (that use electromagnetic radiation) to warm your body directly. The sun produces a combination of visible and invisible light, and one of those invisible spectrums is infrared rays. Invisible infrared wavelengths are what makes the sun feel warm (and ultraviolet wavelengths are what makes it bright). Scientists have established that infrared waves are beneficial to the human body because they are easily absorbed, stimulating the lymphatic, immune and cardiovascular systems and also help remove toxins. Infrared does all of this without any of the harmful rays of sunlight.