... hair removal works by sending a beam of laser light to a group of hair follicles with enough power to disable ... back about 20-30 days. When hair regrow with 1-2cm, do the second treatment.*Keep treating, ... , legs, chest and back. Almost all parts of the body can be treated, however please avoid using ... results.Side Effects ?Slight reddening and local swelling of the skin, similar to sun burn is normal. ...