A diode laser uses semiconductor technology that produces coherent projection of light in the visible to infrared range. It uses a light beam with a narrow spectrum to target specific chromophores in the skin. The 808nm diode laser hair removal machine is now the most advanced and effective hair removal machine on the market. By properly adjusting laser wave length and pulse width, the laser can penetrate the top layer of skin and then reach the hair follicle. Then the light energy will be adsorbed and converted into thermal energy which can destroy the hair follicle. Thus the laser will make the hair lose its ability to regenerate while not destroying surrounding tissue. So the laser hair removal is a painless technology which can remove various body hair safely, quickly and for long.