Diode laser equipment adopts 808 nm, particularly effective to hair follicle melanocytes without injury surrounding tissue. The laser light can be absorbed by hair shaft and hair follicles in the melanin, and converted into heat, thus increasing the hair follicle temperature. When the temperature raises high enough to irreversibly damage the hair follicle structure, which disappear after a period of natural physiological processes of hair follicles and thus achieve the purpose of...