Most of the red marks will recover on their own after the scabs fall off, and can be left untreated for observation. If necessary, it can also be removed by medication and physical therapy. 1. Observation: the red marks left behind after the scabs fall off will usually recover gradually with the skin’s metabolism, generally do not need special treatment, daily attention should be paid to sunscreen, avoid scratching and stimulation of the local. 2. Medication: medication can promote the red marks to subside, can be used externally with cumulonimbus cream ointment, vitamin E ointment and other drugs to assist in the treatment. 3. Physical therapy: If necessary, you can take laser and other physical therapy measures to remove the red marks, such as intense pulsed light. If you need to use medication, you need to use it under the guidance of a doctor to avoid abusing medication.