The medical term for indented scars is called depressed keloid scars, and its repair modalities include laser treatment, filler treatment, micro-needle treatment, etc. 1. Laser treatment: Usually, super pulsed carbon dioxide fractional laser is used for treatment, that is to say, tiny holes are made in the scar, which causes thermal damage reaction around the micro-holes, initiates the skin’s damage re-repairing process, and stimulates the regeneration and re-arrangement of collagen fibers; and it can also sharpen the edges of the scar, so as to make the scar become flat visually. 2. Filler treatment: it includes hyaluronic acid and autologous fat filling, etc. Both of them can improve the depressed appearance of the scar by replenishing the volume of the depressed area. Sodium hyaluronate needs to be filled regularly and repeatedly, while autologous fat can have a more long-term clinical effect. 3. Microneedling: It is a safer and simpler treatment by destroying the collagen fiber bundles in the superficial dermis, initiating the skin’s damage-repair process and stimulating the generation of more collagen fibers, and the postoperative recovery is quicker. Patients with depressed scarring and the desire for treatment are advised to go to regular hospitals for standardized treatment, and do not blindly treat it on their own to avoid adverse consequences.