The term “laser” originated as a word for "light amplification by stimulated emission of radiation. Laser surgery'' is a type of surgery that utilises a laser (in contrast to using a scalpel) to cut the tissue. Laser Surgery for skin is used to treat different skin conditions including scars, vascular and pigmented injuries, and for photorejuvenation. Laser medicines consist of lasers for the treatments, or therapies, such as laser photodynamic therapy, Dental laser. Some of the common Laser medicines are Endovenous laser therapy, Laser-assisted new attachment procedure, Laser scalpel, Laser surgery, Light therapy, Low level laser therapy, Photodynamic therapy, Photomedicine, Soft-tissue laser surgery. A broad range of lasers are used now a days such as erbium, dye, Q switch lasers and CO2 are used to treat and daignosis various skin conditions including scars, vascular and pigmented lesions, and for photorejuvenation. The laser surgery for dermatology usually by pass skin surface. The principle of laser surgery for dermatologic problem to remove the unwanted tissue, which is based on SPTL(selective photothermolysis).