Currently, the commonly used methods of exfoliation include topical medication and fruit acid peeling treatment. The stratum corneum has an important physiological function that protects the skin from ultraviolet rays, protects the skin from drying out, and so on. Excessive buildup of the stratum corneum may lead to clogging of the pores with sebaceous glands and various skin diseases. However, if you clean up too much, you may also damage the skin’s barrier function, the skin is susceptible to external stimuli, prone to skin allergies. 1. Topical medication: Keratin can be used externally as prescribed by the doctor to promote normal skin metabolism. Commonly, there are retinoic acid drugs such as retinoic acid ointment, salicylic acid preparation, salicylic acid ointment, etc. These topical drugs can promote exfoliation, so as to achieve the effect of exfoliation. 2. Fruit acid peeling: patients with keratin, you can also go to the regular hospital for facial fruit acid peeling treatment, a certain concentration of fruit acid can promote skin surface aging. Make the skin surface aging stratum corneum off, remove the skin excess keratin. Patients with keratin, should choose the appropriate method under the guidance of professional physicians.