Infrared wavelengths are the invisible part of the sun’s spectrum consisting of near (NIR), mid (MIR) and far (FIR) rays. These rays have the ability to penetrate human tissue. This characteristic makes infrared beneficial because it heats the body directly at the core rather than simply warming the air resulting in a deep, detoxifying sweat at the cellular level, where the majority of toxins reside.
Infrared heat is completely safe and healthy for all living things. You can be exposed to infrared light for hours without the risk of burning. Infrared is a naturally occurring output of the sun, but does not contain the harmful UV rays associated with unprotected sunlight. In fact, infrared’s gentle heat is used in hospitals to warm newborn infants.