Chicken skin, i.e., keratosis pilaris, can be improved by softening or dissolving the keratin through skin brushing with acid, in addition to medication and other treatments. Keratosis pilaris is characterized by follicular papules with varying degrees of perifollicular erythema, and is associated with a variety of factors such as the accumulation of keratin in the skin. Chemical exfoliation treatment by brushing acid with fruit acid, salicylic acid, etc. can soften or dissolve keratin, thus improving the symptoms of perifollicular keratosis and providing a therapeutic effect. Alternatively, medication can be used under the guidance of a specialist, including keratin softeners, such as retinoic acid ointment and salicylic acid ointment, which can also soften or dissolve keratin, and moisturizers, such as cod liver oil ointment, to improve the dryness of the skin. It is recommended that people with cosmetic needs, severe symptoms, and inflammatory manifestations should go to a regular hospital in time for appropriate standardized treatment under the guidance of a specialist.