the diode laser device uses a wavelength of 808nm, which has special effectiveness for melanocytes of hair follicle without any damage to the surrounding tissues. the laser can be absorbed by melanocytes of hair follicles and converted into heat to increase the temperature of hair follicle. when the temperature rises that can irreversibly destroy the structure of hair follicle, the hair follicle structure will disappear , thereby achieving the purpose for removing hair permanently. diode laser hair removal technology is based on the selective dynamics of light and heat. it provides less pain, easy operation, the safest, techology for permanent hair removal now..syi