Scarring has formed. At present, there is no particularly effective method other than skin plastic surgery. Even with skin plastic surgery, the results vary from person to person and may not be completely satisfactory. If the injury affects the dermis, scars will appear. Currently, there is no particularly good way to treat scars. You can try applying some ointments such as vitamin E cream, polysulfonic acid mucopolysaccharide cream, asiaticaside cream, and allantoin. Creams can improve the condition to a certain extent, but most of the effects are not completely satisfactory.