There are many ways to remove scars, but many of them are incomplete. At present, the most effective scar removal method is laser scar removal.

Laser scar removal can be selectively treated by using colored light with different wavelengths, which acts on different target tissues and protects the skin from damage. Light is injected under the skin, turning particles into powder, which is then absorbed and removed by macrophages. If the scar tissue is dark in color, it can be repeated many times, constantly changing the wavelength of light, so that the original deep scar gradually fades away until it disappears.