Laser cannot completely remove scars, but it can lighten them.
For scars that are not physically scarred and are relatively small in size. You can use erbium laser as well as carbon dioxide laser treatment, these lasers are the use of photothermal effect, instantly produce high temperature to destroy the scar tissue. In some cases, the scars can be effectively relieved, but there is a possibility that pigmentation marks may be left behind.
For larger old scars, fractional lasers can be used. Fractional lasers induce tissue regeneration in the deeper layers of the skin by causing tiny traumas on the surface of the skin. It can reduce the size of the scars.
After laser treatment of scars, localized flushing and swelling or skin breakdown may occur, and this skin damage usually subsides on its own within 1~2 weeks. Topical ice packs and cold sprays help to relieve the discomfort.
The above laser operations need to go to a professional institution to be operated by a regular physician.