1. Working Principle Laser Action Mechanism: CO₂ fractional laser acts on skin tissue by emitting a laser beam with a wavelength of 10600 nanometers. This laser can be absorbed by the moisture in the skin and produce a high thermal effect. When the laser energy acts on the skin, it instantly vaporizes the moisture in the skin tissue, forming a tiny thermal damage zone, called Microthermal Zones (MTZs). The normal skin tissue around these microthermal damage zones will start the self-repair mechanism to stimulate the regeneration and reorganization of collagen. Promote skin repair: The formation of microthermal damage zones will stimulate fibroblasts in the skin to secrete collagen and elastic fibers. The newly generated collagen and elastic fibers will gradually fill the microthermal damage zones, making the skin tighter and smoother. At the same time, laser treatment can also promote skin metabolism, accelerate the shedding of aging cells, and promote the generation of new cells, thereby improving the texture and color of the skin. CO₂ fractional laser has multiple functions and can improve multiple skin problems at the same time. In addition to reducing wrinkles and tightening the skin, it can also treat acne scars, pigmentation, enlarged pores and other problems.