Scars are overgrown abnormal scar tissue that forms after a skin wound or healing. They are often characterized by large deposits of collagen fibers and matrix components and new capillaries in the dermis, and infiltration into the surrounding normal skin tissue. In recent years, there has been an increase in the number of patients with scars, mostly adolescents or young women, on the head, face, chest, abdomen, back, and extremities, which not only impair skin function but also affect aesthetics. What can be done to prevent scarring? If you have a past history of scarring, or a family history of scarring, you should avoid trauma as much as possible, but there are also some details in your life that you should pay attention to and improve. The first is to avoid spicy and alcoholic foods, and to eat less greasy foods and sweets. Third, when bathing, pay attention to skin cleanliness. Four, as far as possible to keep clothes dry. Wear loose, breathable clothes and dry or wash them in time after sweating a lot. If you have already grown scars, you should seek medical attention and develop a targeted treatment plan. If you use the surgical removal method, you should undergo radiotherapy in time to prevent recurrence, and you should follow up in time.