Acne is divided into closed acne and open acne, closed acne, also called whitehead acne, and open acne, also called blackhead acne, is a common problem that occurs in the face of adolescents, and its treatment mainly has the following methods: 1, the topical use of retinoids to improve the keratinization, commonly used retinoic acid ointment, adapalene gel, tazarotene gel, etc. 2, the use of physical therapy, you can use the needle picking method of removal of acne. Of course, it must be treated under the guidance of medical professionals.3, chemical peels can be used, such as fructose or salicylic acid, etc., which must also be operated by professionals in the hospital.4, oral retinoids or zinc preparations, such as licorice zinc granules, viamin ester capsules, isotretinoin gel pills and so on.