Laser hair removal is a procedure that uses a laser, or a concentrated beam of light, to get rid of hair in different areas of the body. If you're not happy with shaving, tweezing, or waxing to remove unwanted hair, laser hair removal may be an option worth considering. Laser hair removal is one of the most commonly done cosmetic procedures in the U.S. It beams highly concentrated light into hair follicles. Pigment in the follicles absorb the light. This destroys the hair.
Lasers are useful for removing unwanted hair from the face, leg, chin, back, arm, underarm, bikini line, and other areas. However, you can't get laser done on your eyelids or the surrounding areas or anywhere that has been tattooed.
Lasers can selectively target dark, coarse hairs while leaving the surrounding skin undamaged.
Each pulse of the laser takes a fraction of a second and can treat many hairs at the same time. The laser can treat an area approximately the size of a quarter every second.
If you are planning to undergo laser hair removal, you should limit plucking, waxing, and electrolysis for 6 weeks before treatment. That's because the laser targets the hairs' roots, which are temporarily removed by waxing or plucking.
Laser hair removal uses a process called selective photothermolysis. Heat from a laser destroys cells that have a lot of pigment (color). Since dark hair has a lot of pigment, it absorbs the most heat. Hair transfers heat to the hair follicles and destroys them, so hair can’t grow.
A hair follicle has to be in its anagen, or growth, stage for the procedure to work. Follicles are in different stages at different times, so most people need multiple laser treatments.