The basic principle of semiconductor laser hair removal machine is mainly biological effect. When it chooses laser with wavelength of 808nm for irradiation it not only has good absorption of hair follicle melanin but also has no effect on normal epidermis. The melanin in light energy is absorbed by hair stem and light energy changes into heat energy raise the temperature of hair follicle thereby the hair follicle structure will be destroyed the hair follicle that already destroyed passes through natural physiology process hind is shed achieve depilate purpose thereby.
