If the scar lasts for a long time, the external medicine has little effect. It is best to go to dermatology or beauty department for treatment. At present, there are many methods to treat scars, and the results are good, such as microcrystal grinding, injection filling and micro-shaping. You can go to the dermatologist to find out what kind of treatment is suitable for your skin and scars. I hope it will help you, and I hope it will be adopted!