When the acne subsides there will be red acne marks, you can use drugs to lighten the acne marks, you can also use the laser method to get rid of acne marks. 1. Medication: you can use growth factor gel to promote epidermal recovery and lighten the red marks, or use mucopolysaccharide polysulfate ointment and other drugs, which have certain effect of removing red acne marks, but need to be used for a long time. 2. Laser methods: commonly used laser methods, including red and blue light therapy, intense pulse laser therapy, etc., the effect is relatively fast, but the symptoms of serious patients to do more than a few laser to be able to completely get rid of acne marks. The above methods need to be used under the guidance of a doctor, usually do not pick and scratch the acne marks, keep the skin clean and hygienic, and do a good job of sunscreen, moisturizing the skin. It is recommended to go to a regular hospital to receive standardized diagnosis and treatment. Drugs should be used in accordance with medical advice, do not self-medication.