Recurrent closed mouth acne on the face can be treated with retinoids, azelaic acid, or physical therapy, as well as lifestyle modifications. Long-term closed mouth pimples on the face is usually a manifestation of acne, which can be treated with retinoic acid drugs, including retinoic acid ointment, tazarotene, adapalene gel, or benzoyl peroxide, azelaic acid and other drugs. In addition, when it is difficult to recover from repeated episodes of occlusion, physical therapy, including fruit acid skin resurfacing treatment, can be carried out. Usually, you should pay attention to keep the skin clean, pay attention to light diet, etc., can promote recovery. If the symptoms are serious, go to the hospital and use the above medication under the direction of your doctor.