To understand the reason of laser scar removal, we should start with the principle of laser scar removal. It can stimulate the regeneration and recombination of collagen tissue and achieve the effect of removing scars. Different wavelengths of colored light are used to selectively treat scars. By controlling the laser wavelength, different tissues and different degrees of scars can be repaired without damaging skin tissue. When the laser is irradiated on the skin, it will penetrate into the subcutaneous tissue, and the scar tissue will change from particles to powder until it is absorbed and removed by cells, and then the scar will change from deep to shallow, and from shallow to non-existent. The second reason why the laser can effectively remove the scar is that it has good adaptability and can deal with hyperplastic scars that are difficult to treat. Laser scar removal plays an important role in non-surgical treatment of scar removal. Clinically, it is proved that laser not only has a certain therapeutic effect on flat scar, pockmarked scar and bridge scar, but also has a special healing effect on intractable hyperplastic scar and keloid. The recovery time after laser scar removal was very short, and the surgical wound healed in 3- 10 days. It only takes a few weeks, and your skin will become smooth and smooth.