Acne is a common site for acne. Acne is related to androgen stimulation and is classified as mild to moderate to severe, with grades I-IV according to clinical symptoms. Grade I is mainly acne, grade II is mainly papules and pustules. Grade III shows inflammation and should have scarring, and grade IV reaches scarring. Grade I acne pimples are preferred to Adapalene gel, which is a retinoic acid preparation, applied in dots. This medicine should be applied at night away from light. Use anti-inflammatory Listerine during the day and Adapalene gel at night, and your forehead will soon be well. The treatment of acne requires comprehensive prevention and treatment measures, more vegetables and fruits, less lipids, meat, etc. Oily skin can be washed 2-3 times a day to get rid of the oil and reduce inflammation and infection.