Laser hair removal is a noninvasive technique that uses highly concentrated light to penetrate hair follicles. The laser light is absorbed by the pigment in the hair shaft, which damages the follicle, hindering future hair growth. Laser hair removal only affects actively growing hair follicles, so it may take several treatments to see optimal results. Following laser hair removal, it is important to avoid direct sunlight and tanning beds, and wear sunscreen when outdoors.