Scarring is a disease whose greatest damage to the body is its continuous infiltrative growth into the surrounding area, destroying normal skin; it is very similar to a tumor, hence the name scarring tumor. One of the several effective treatment options commonly used for scarring is drug injection therapy. Familiarity with and knowledge of the following precautions are especially critical to making scar tumor treatment effective. Compression After the injection, sterile gauze should be used to compress the area for at least fifteen minutes until there is no bleeding. The injection area should not be washed with water until the next day. Observation The mechanism of action of scar injections is to induce apoptosis and necrosis of the scar cells in order to force the scar to soften and inhibit its recurrence. Therefore, it is normal for the injected area to be a little dark in the early stage, and it will gradually fade away later. If the skin of the injection area blisters or breaks down, please contact the assistant doctor or come to the hospital in time. You can apply iodophor yourself twice a day and cover it with sterile gauze to avoid infection. Later on, when the scars soften, blood will appear in the injection area, and there may be whitening or local depression around the area, which will usually recover on its own, so please do not be nervous. For female patients, since the main component of the drug injected into the scar bumps is hormones, women may experience menstrual irregularities, which will generally recover after stopping the drug or lengthening the treatment interval. In any case, please contact your assistant doctor or come to the hospital if you have any discomfort after the treatment. Medication Use scar medication after scar injection only until the injection area is not blackened, crusted, or broken. If any of these conditions are present and scar medication is used, it may cause the scar to break down. Adherence Some patients delay and do not come to the injection medication on time, resulting in a recurrence of scarring. Individual patients only come for injections when their scars are itchy and uncomfortable, resulting in drug resistance and delayed scarring. It takes a long time to heal scars with injections, so be sure to follow your doctor’s instructions and get your injections regularly.