The common method of permanent hair removal on legs is laser hair removal, and the common ways are E light hair removal and OPT hair removal. Laser hair removal refers to is through certain instruments, the use of the characteristics of the hair growth cycle, remove the hair growth areas, so that the hair follicle protein coagulation, disintegration, destruction, permanent non-growth of hair follicles. It is suitable for people who need hair removal for dark-colored hair. E light hair removal technology mainly refers to is the collection of skin collection cooling, intense light pulse therapy technology, radio frequency technology collection of hair removal, can more thoroughly destroy the hair follicle, for dark and light-colored hair have good results. OPT hair removal technology utilizes the principle of selective photothermolysis of light to rapidly increase the temperature of hair follicles to achieve permanent hair removal. It is suitable for different colors and depths of skin hair in various parts of the human body. Regardless of which hair removal technology should be carried out in regular medical institutions, according to their own situation to choose the appropriate treatment.