First of all, we would like to introduce you to the classification of keloid scars for treatment: 1. Mature keloid scars: light colored and flat keloid scars; 2. Immature keloid scars: this is the intermediate state of keloid scars towards maturation, at this time the keloid scars are red, raised and painful or itchy, most of these keloid scars will become flat after some time and the color will become close to normal. 3. Linear hyperplastic scar: (e.g. surgical incision scar) This is a kind of scar confined to the incision, red in color, raised, and sometimes itchy. This type of scar usually enters a rapid proliferation phase 3-6 months after surgery, then enters a resting phase, and then starts to fade, and the whole process takes 2 years. Eventually it will become a wider raised scar. 4. Laminar hyperplastic scar: (e.g. post-burn scar) This is a scar that is confined to the burn lesion and is red, raised, and sometimes itchy. 5. Keloid scars: Keloid scars are keloids that are raised and itchy beyond the original injury. They continue to proliferate for up to 1 year and do not subside on their own, with a very high recurrence rate after excision. The following are treatment recommendations for each type of scar: 1. Immature scar: Such a scar is difficult to predict whether proliferation will occur and requires the following prophylactic treatments: a. Hypoallergenic adhesive tape for a few weeks after surgery to reduce wound shear; b. Silicone gel is started immediately after stitch removal, at least 12 hours a day; c. More severe scars require intra-scar hormone injections. d, if the red color of the scar persists for 1 year, then the possibility of scar hyperplasia is high, and treatment of proliferative scar is needed at this time. 2.Linear hyperplastic scar: a. The first-line treatment for this kind of scar is silicone gel; b. If silicone gel is ineffective, or if the scar hyperplasia is severe and itching is obvious, then intra-scar hormone injection is needed; c. If silicone gel and injection treatment are ineffective for 12 months, then scar excision and postoperative silicone gel treatment are needed. 3.Lamellar hyperplastic scar: a. The first line of treatment for this type of scar is silicone gel combined with elastoplast treatment. b. Burn scars often require a combination of modalities: silicone gel, intra-scar hormone injections, scar release repair surgery, and pulsed dye laser treatment. 4.Keloid scars: a. The first-line treatment for small keloid scars is silicone gel combined with intra-scar hormone injection, if this method is ineffective it is necessary to consider the application of silicone gel plus intra-scar injection after surgical excision. b. It is recommended that surgical excision of the keloid only partially, or the application of scar skin implants to cover the trauma to reduce the local deformity caused by scar excision, and postoperative radiation therapy is required. c. Large keloids are often insensitive to all treatment modalities and have a very high recurrence rate, and treatment by a surgeon specializing in scar treatment is recommended. For some patients, the application of histamine antagonists to relieve itching and keep the area clean may be the only treatment. Radiation therapy may be considered in cases where treatment fails. Intra-scar injections of 5-fluorouracil or bleomycin are new treatment options.