Laser can stimulate the skin. There is a kind of fibroblast, which can help the skin to produce collagen and fill depressed wrinkles. It is also a substance that keeps skin smooth and firm. So it is especially effective for shallow lines (such as crow's feet and shallow lines on the mouth), but if the wrinkles are too deep or too deep, the laser can't help them, because there is no collagen under the wrinkles and there is no material to fill the depressions after laser treatment. Therefore, facial laser wrinkle removal is very safe. Fuzhou Li Bihua plastic