Infrared radiation therapy is drug-free and non-invasive light-based technology in physiotherapy which provides a wide range of health benefits. It is an alternative treatment for healing acute to chronic pain and different other conditions of health. It's safer than ultraviolet rays, which can cause skin damage. Types of Infra-red Rays Generators Non-Luminous Generator Luminous Generator Infrared rays are in an electromagnetic spectrum just above visible light, with a wavelength of 770 nm to 1 mm. These rays are relatively safe in the neonatal intensive care unit, as they are used to warm infants. In recent years IR therapy applications have moved on rapidly. For example, IR therapy was developed that does not actually require an external source of power, such as materials emitting IR, and garments that can be powered by body heat alone. Another area of interest is the possible involvement of solar IR radiation as opposites sides of the coin in photoaging or photorejuvena...