Dermal fillers can only work to make depressed acne scars, formed due to lack of collagen, virtually unnoticeable. Hyaluronic acid is the most common filler that can help plump the skin because of its water-retaining property.
In the dermal filler treatment, doctor inject hyaluronic acid, collagen, fat, or other collagen-boosting substances. These fillers help lift the acne scars to the surface and make them even by restoring collagen in the scar tissues. Dermal filler treatment provides almost immediate results. However, the results of the fillers are temporary or semi-permanent. Therefore, they need to be re-injected after every few months or years.