Scars are left behind after wound healing and are usually removed by radiation therapy, surgical excision and laser therapy. 1. Surgery: The difficulty of surgery depends on the size and location of the scar. Different surgical methods are required for different scars. If the scar is large or located in the functional area, combined flap grafting is usually required to optimize the surgical result. 2. Radiation therapy: Generally for hyperplastic scar or keloid, localized superficial X-ray, isotope therapy can be used to lighten or reduce hyperplastic scar. 3. Laser therapy: depressed keloid scar, also called atrophic keloid scar, that is, the keloid scar manifests itself as a downward depression and atrophy of the skin surface. The treatment often used for depressed keloid scar is to lighten or improve it with fractional laser. If you need to remove keloid scars, you need to visit a regular medical institution to avoid adverse complications.