1. Scars are skin wounds caused by trauma or surgery. After healing, it will remain on the skin permanently and is not easy to remove. A rough or rough scar can be beautified into a small, unremarkable and difficult-to-see scar by surgical repair or dermabrasion, but it can't be really eliminated. It is not easy to repair scars, so the prevention of scars is better than the treatment. If you want to repair the scar, you must wait for the effect of scar maturation surgery. 3. The types, causes and treatment of scars are very complicated, so you must consult a plastic surgeon to avoid self-defeating, and any scars can be eliminated. This statement is very attractive, but it is doubtful whether these drugs have been clinically proved to be effective and whether they have been approved by the health authorities.