CO2 fractional laser therapy theory was first published by the United States Harvard. University laser medicine expert Dr. Rox Anderson, and immediately get the experts around the world agree and clinical treatment. CO2 fractional laser wavelength is 10600nm, the use of selective photothermal decomposition principle, evenly on the skin marked with fine holes, resulting in the skin layer of hot stripping, thermal coagulation, thermal effect. And then cause a series of skin biochemical reactions to stimulate the skin for self-repair, so as to achieve firming, rejuvenation and eliminate the effect of stains.