AHA peeling uses a high medical concentration of AHA to peel off the skin which promotes the shedding of the aging stratum corneum, accelerate the renewal speed of keratinocytes and a small part of the upper epidermal cells, and promote the proliferation of elastic fibers in the dermis. AHA peeling has a good effect on superficial acne scars and can also remove or minimize large pores, but it takes several courses of treatment to eliminate acne scars.