Prevention of double eyelid scar hyperplasia: patients should avoid using some sunscreen and anti-wrinkle cosmetics containing heavy metals such as mercury after operation, because these cosmetics may aggravate the scar hyperplasia at the incision, which is even worse for people with scar constitution. If you have any questions, please ask Baidu: Baidu Aimei knows, or click my name Aimei. Com, find me and I'll answer you online.