Eating vitamin C can promote collagen synthesis and also enhance the body’s metabolic ability, which helps to lighten scars and also alleviate the phenomenon of local pigmentation, making the skin look fairer, but eating vitamin C does not have the effect of directly eliminating scars. Scars on the skin are generally hyperplastic phenomena caused by injuries that are not treated in time, and can be improved by using scar creams and, if necessary, laser treatment or hormone injection therapy. In addition, you can take vitamin C orally or apply vitamin C externally. Vitamin C can participate in blood clotting and can play a role in promoting wound healing when applied after an injury, and vitamin C is an important nutrient for human skin, which can eliminate free radicals in the skin and inhibit tyrosinase activity, and can also promote skin collagen synthesis and enhance skin metabolism, which has a certain whitening and scar lightening effect. It can also promote skin collagen synthesis as well as enhance skin metabolism, which has a certain effect on whitening and scar reduction. Although taking vitamin C is effective for improving scars, it cannot directly eliminate scars and there are individual differences, so it is recommended that patients use it under the guidance of a doctor and avoid self-medication to avoid adverse drug reactions. It is recommended that patients use it under the guidance of their doctors and avoid self-medication to avoid adverse drug reactions. It is important to take strict sun protection measures for the skin and pay attention to daily protection to avoid skin injuries.