Hair removal lasers are useful for removing unwanted hair from the face, leg, arm, underarm, bikini line, and other areas. Hair removal laser is a treatment that uses lasers to target the roots of hair beneath the surface of the skin. Though it’s not guaranteed to be permanent, a majority do experience permanent hair removal after a series of treatments. There’s a variety of lasers on the market, some more effective than others on certain skin tones, hair colors, and treatment areas.