During laser hair removal, a laser emits a light that is absorbed by the pigment (melanin) in the hair. The light energy is converted to heat, which damages the tube-shaped sacs within the skin (hair follicles) that produce hairs. This damage inhibits or delays future hair growth. It does drastically reduce hair growth—to the point that you can stop shaving altogether. You can get it done anywhere on the body, and the machine can cover large places fast.