Can Infrared Rays be harmful?
Infrared rays can be sensed by heat, but they are not harmful for skin. Also, it should not be confused with ultraviolet radiations, which causes skin cancer when exposed to sunlight. Therefore, IR light finds a wide variety of uses in military, night time photography, surveillance systems and so on.
Far Infrared Rays are not harmful. Even though they are emitted from the sun, they differ from harmful UVA/UVB rays. Far Infrared Rays (FIR) penetrate deep into organic substances, such as the human body, offering a soothing, warming effect from the inside out. The energy contained within the FIR, photons are shown to activate vital processes within our bodies such as the endocrine system and metabolic processes. The effects of FIR on the human body are so positive that they are used in cancer treatment around the world (known as hyperthermia).