Chicken skin is due to perifollicular keratosis, is a genetic correlation disease, can be used externally retinoic acid ointment, salicylic acid ointment and other drugs, soften or dissolve keratin to improve the symptoms. 1. Vitamin A acid ointment: used in the treatment of common acne, blackheads, senile, sunlight, drug skin atrophy, as well as a variety of keratinization abnormalities, hyperpigmentation skin disease psoriasis and so on. It can therefore be used in the treatment of follicular keratosis pilaris. Adverse reactions may produce local irritation, such as erythema, burning sensation, flaking, etc.; women within the first trimester of pregnancy is prohibited, acute or subacute dermatitis, eczema skin patients are prohibited. 2. Salicylic acid ointment: for tinea capitis, tinea pedis, and local keratosis. Adverse reactions, may cause irritation, or contact dermatitis, large area use may appear dizziness, headache, tinnitus, blurred consciousness and other symptoms. Contraindications are unclear. Patients with keratosis pilaris are advised to go to the hospital for examination first, and the drug should be used under the guidance of a professional doctor, do not self-medicate.