What is the mechanism of removal of hair by Laser?
LASER energy is attracted by colouring pigment in hair follicles. When Laser rays are absorbed by the cells of hair follicles, light energy is converted into heat energy and so these cells are destroyed. Such hair follicle destruction also destroys the secretary sac. In other procedures of hair removal secretory sac continues to send out new hair even if hair is repeatedly destroyed and even if it is ripped out by the roots. But this does not happern in case of LASER hair removal. Laser can destroy hair follicle by photothermolysis of pigmented cells containing melanin. Laser is absorbed by these cells and not by other cells in the skin and thus destroys only the cells of root of hair. Some laser is absorbed by upper layer (epidermis) of the skin.
