This has caused scarring. 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 results are unsatisfactory. People with scarring constitution should prevent skin trauma, prohibit surgical excision, and prohibit indiscriminate use of corrosive drugs to prevent aggravation of the condition.