
Working Principle
Lasers and light sources use the principle of selective photothermolysis to eliminate hair and its potential regrowth without damaging the surrounding skin. During a laser hair removal treatment, light passes through the skin and is absorbed by the melanin in the hair shaft. This absorption raises the temperature of the hair follicle and thermally destroys the cells responsible for regrowth. The attributes of the light (wavelength, pulse duration and power) are chosen to ensure damage to these cells and not to the rest of the skin.
The Tissue Penetration illustration shows the depth of penetration emitted by various laser devices used for laser hair removal. The diode laser penetration is able to surpass that of an ND:Yag due to its ability to be compressed onto the skin causing the waves emitted to penetrate deeper (an ND:Yag cannot be compressed and must sit directly on top of the skin). The Diode is capable to effectively treat all depths of hair, from your head down to your toes.