Laser hair removal is used to reduce unwanted hair. Common treatment locations include legs, underarms, upper lip, chin and bikini line. However, it’s possible to treat unwanted hair in nearly any area — except the eyelid or surrounding area. It beams highly concentrated light into hair follicles. Pigment in the follicles absorb the light. That destroys the hair. It essentially destroys the follicle, meaning it can achieve permanent removal. Typically, the hair in treated areas falls out within 2-3 weeks.