The acne marks formed by acne mainly include red acne marks and black acne marks. Generally, if the red acne marks are well moisturized and sunscreen, the internal branches will gradually fade in 4-6 months. If the sun protection is not good, it will slowly turn into brown acne marks, which is relatively difficult to treat. For the treatment of red acne marks, intense pulsed light can be selected clinically, which can contract blood vessels and need multiple treatments. In addition, intense pulsed light can also increase collagen in dermis and improve pore size. In addition, you can choose skin care products containing fruit acid, or directly treat the skin with fruit acid to help the skin renew. Black acne marks are mainly pigmentation after inflammation. For the treatment of black acne marks, high concentration of L-C can be introduced clinically to promote the production of skin collagen and accelerate the regression of black acne marks. In addition, you can also choose fruit acid rejuvenation or salicylic acid rejuvenation for treatment. In addition, as a patient, we must always keep our face clean, use safe and non-irritating facial cleanser and maintain good eating habits. In addition, you can do proper exercise.