If you want to get rid of facial hair permanently, you can take laser treatment. However, the permanent hair removal in clinical practice means that after continuous regular laser treatment, you do not need to take laser hair removal again within a few years after achieving the desired effect. For patients who want to permanently remove facial hair, you can take into account their own situation, under the guidance of the doctor to take laser hair removal. The main use of selective photothermal effect, when the laser from the skin surface penetration to the hair follicle parts, the hair follicle absorbs the laser energy can be converted into heat, then the hair follicle to stop the growth of hair, can play a role in removing facial sweat hair. However, patients need to go through about 3~5 times of laser hair removal to achieve the effect of permanent clinical hair removal. For patients who have the need to remove facial hair, it is recommended to go to a regular hospital and get rid of sweat hair under the operation of a professional doctor.