Laser Hair Removal (LHR) is, in fact, a misnomer. The proper term is Laser Hair Reduction. This is because no laser can permanently remove all the hairs that are targeted. But the good news is that these lasers can reduce your hair making it unnoticeable to the eye.
Laser light of a certain wavelength is specifically absorbed by the pigment Melanin. This pigment is present in our hair, skin, eyes and other areas.
Human hair has a high concentration of Melanin. It absorbs more of the laser light which is then converted into heat energy that travels down to the hair bulb below the skin.
The heat generated is just enough to destroy or weaken the hair bulb which results in decreased or no hair growth.