Scars, or keloid scars, are a normal physical reaction to the natural healing process of the skin after a trauma. Once a scar is formed, it cannot be completely removed. For more serious scars, topical medications, lasers or closed injections can be used to improve the appearance of the scar. 1. Topical medication: For early stage keloid scarring, topical medication can be used to inhibit scar proliferation to improve the appearance of the scar, common medications include silicone gel and mucopolysaccharide polysulfate ointment. 2. Laser treatment: laser treatment is also available, for example, dye laser can selectively act on hemoglobin to occlude the local superficial capillaries of keloid scars to avoid excessive proliferation of keloid scars; carbon dioxide laser can also be used to start the process of skin damage repair and stimulate the regeneration and rearrangement of the local collagen tissues so as to improve the appearance of keloid scars. 3. Closure injection: Closure injection generally refers to the injection of glucocorticoid drugs, such as Betamethasone, Triamcinolone acetate, etc., which is more effective for severe hyperplastic scars and scars. For patients with more serious scars, it is recommended to go to regular hospitals for timely examination and standardized treatment under the guidance of professional doctors.