It depends on whether you have a scar constitution. If you have a scar constitution, most wounds will have scar hyperplasia. It is best to check platelets and blood coagulation before operation. If there is no scar constitution, don't touch the wound with your hands after double eyelid surgery, pay attention to eye cleanliness and hygiene, try to raise the pillow when sleeping, and be careful not to let blood flow back to the eyes, which can effectively avoid the problems caused by scars.