What you should say is filling. At present, it is generally necessary to choose the surgical method of skin replacement with fruit acid to completely eliminate acne. High concentration of fruit acid is used to remove the cuticle of skin, promote the exfoliation of aging cuticle, accelerate the renewal of keratinocytes and a small number of epithelial cells, and promote the proliferation of elastic fibers in dermis. It has a good effect on superficial acne scars and can also improve the coarse pores. However, it takes a lot of courses to eliminate acne scars, but its advantages are safety and few side effects.