Light Therapy consists of an LED device that emits red or infrared light that penetrates the skin to stimulate the energy production and other metabolic processes in targeted areas. The device provides relief of aches and pains and in addition, infrared light is one of the only physical therapies that acts to create a healing effect. Cells that are injured can actually be rejuvenated by light.
LED's are similar to lasers in that as they can emit the same light but differ in the way that the light energy is delivered. Lasers are focused-beam single-wavelength light emitters that can be intense enough (a 'hot' laser) to burn/cut tissue or 'cold' enough to only have light therapy effects. LED's do not deliver enough power to damage the tissue, but deliver enough energy to promote natural self-healing and pain relief. With a low peak power output, the LED's provide a much gentler delivery of the same healing wavelengths of light, as does the laser but without the same risk of accidental eye damage that lasers do.