The Laser Hair Removal system a work using the principal of selective photothermolysis, in which a carefully timed pulse of laser energy passes through the skin and is absorbed and converted to heat energy at the hair follicle. Because of 800nm wavelength laser light penetrates deeper.
Laser Hair Removal works best in lighter skinned, darker haired patients. Because the target chromophore in hair follicles is melanin pigment, less laser energy is absorbed by the skin and more by the hair follicle. Tanned skin also “robs” laser energy as it passes through the skin to the hair follicle. The Diode lasers are less dependent on skin color than the ruby and alexandrite lasers. Because the pigment in the hair is the target for the laser energy, gray or white hair (which lacks pigment) cannot be effectively treated with any laser or light-based device.