Scar medication injections are one of the common and effective treatments for raised scars. Understanding the precautions related to scar injection will play an important role in helping the treatment. Compression, braking: scar injection needs to be padded with sterile gauze compression for more than fifteen minutes until the injection area does not bleed before stopping the compression and leaving the hospital. The injected area should not be exposed to water until the next day. Observation: The purpose of scar injection is to promote apoptosis and necrosis of scar cells to achieve the purpose of softening the scar and solve the problem of “protruding” scar appearance. Therefore, it is normal for the injected area to darken in the early stage after injection, and it will gradually fade away later. If the injection area becomes blistered or broken, please contact the assistant doctor or come to the hospital. After the injection treatment, patients can also apply iodine povidone themselves twice a day and cover with sterile gauze to avoid infection. Later, after the scar softens, blood will appear in the injection area, and there may be whitening or localized depression around the area, please do not be nervous, and it will recover on its own later. For those who cannot recover on their own, simple interventions can also be used to promote recovery. The drug component of the scar injection is mainly hormone, women may experience irregular menstruation after the injection, which usually recovers after stopping the drug or lengthening the interval between treatments. If there is any discomfort after the treatment, please contact the assistant doctor or come to the hospital for consultation. Scar medications should only be used after scar injections until the injected area is not darkened, crusted, or broken. If these conditions exist, using scar medication may cause the scar to break down. The purpose of scar injections is to promote the softening and flattening of protruding scars, with limited effect on the appearance of color and other dimensions of the treatment, except for some lucky patients, the vast majority of patients often need to be combined with plasma or laser treatments to achieve the overall improvement of the purpose. Scars are a medical challenge and there is currently no way to get rid of them completely. As medical technology advances, precautions will continue to be adjusted and improved, so please stay tuned with us.