Acne is also known as acne vulgaris, and acne marks are inflammatory hyperpigmentation left after acne has healed. You can use medications such as azelaic acid, photoelectricity treatment, and chemical peeling therapy to reduce and lighten the hyperpigmentation. 1. Medication: Azelaic acid can treat inflammation and acne, and can also reduce post-inflammatory hyperpigmentation. Vitamin A cream, Fusidic acid, Clindamycin and Benzoyl Peroxide are also useful in the treatment of acne. 2. Phototherapy: Intense pulsed light, pulsed dye laser, etc. can reduce the hyperpigmentation produced by acne. 3. Chemical peeling therapy: medications such as salicylic acid and fruit acids can be used to both treat acne and minimize the residual acne marks. 4. Others: Squeezing acne with bare hands should be avoided. Unstandardized and hygienic operation may cause bacterial infection of the wound, which may aggravate the symptoms, and it is recommended to look for professionals to get rid of acne. Drugs should be used in regular hospital dermatology under the guidance of specialists, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for standardized treatment.