When treating with laser light, a distinction must be made between dermatological laser treatments, such as the permanent removal of body hair and tattoos or wrinkle correction and self-approved laser tools. While some may damage the skin superficially and be used like a scalpel (and therefore only by experienced professionals), regular irradiation of the skin

Laser hair growth therapy is also known as red light therapy or cold laser therapy. What this therapy does normally is that it sends photons into the scalp. The growth of hair is stimulated when the weak cells in the scalp absorb these photons as hair has already been lost is caused to grow back.