This Diode Laser with the wavelength of 808nm,is professionally designed for the white,brown and golden hairs. It is with the hair follicle as the target tissue,while not the melanin as the other laser and IPL machines,which makes the temperature of it raising accumulatively,then destroy the hair follicle completely and remove the unwanted hairs permanently.This is a pretty different depilation way,a gentle way, just like the "Wen boiled frog".