Scratch scars are caused by an imbalance between collagen synthesis and degradation after trauma. The recovery period is affected by the individual’s physical condition, infection and medication, and the general recovery period is within 2~4 weeks. 1. Individual physique: Due to the different physique of individuals, the speed of skin repair will also have certain changes, for some people with excellent nutritional status and good physique, the recovery will be faster. 2. Infection: if there is infection, need to actively give anti-infection treatment, infected wounds are generally slower than non-infected wound healing. 3. Drugs. Appropriate use of some epidermal cell growth drugs, such as growth factor treatment, can shorten the time of wound repair, external application of cumulus cream ointment can be early inhibition of scar formation, soften the scar, shorten the time of scar repair. All of the above factors determine the length of the recovery period, the general recovery period is about 2 to 4 weeks, individual differences. If you have problems with scarring after scratching, it is recommended that you consult a regular hospital for treatment under the guidance of a doctor.