Tretinoin ointment is useful in the treatment of scarring, but it is mostly treated with Tretinoin injections intradermally. Scars are benign tumors of the skin caused by overgrowth of connective tissue within the skin, manifesting as a markedly elevated scar that exceeds the site of the original injury. Scars have the characteristics of benign tumors and can grow progressively, constantly eroding the surrounding normal tissues, local itching, pain and sensory abnormalities, affecting aesthetics and the patient’s quality of life. Scars do not disappear on their own and cannot be completely cured. Tretinoin, as a kind of glucocorticoid drug, can be used to treat scars, which can improve the hardness of scars, reduce the size and thickness of scars, reduce local inflammation, relieve pain and itching symptoms, whether to use the drug and the dosage and number of times of the drug need to consult with a professional doctor. Scars are difficult to treat, patients need to consult a doctor and receive individualized comprehensive treatment as soon as possible to improve symptoms and limb function. In daily life, you should keep the skin clean, wear soft clothes and pay attention to skin care.