It is usually normal to have hyperplasia 40 days after a double eyelid cut. Double eyelid surgery is a creative operation that involves making an incision in the upper eyelid area, which can cause damage to the eye tissue, and there is usually scarring after the wound heals, although in many patients the scarring is not very obvious. Some patients may experience scarring, usually around 2~3 weeks after surgery, after which the scar will gradually shrink, some patients may experience scarring for 1~6 months, so scarring 40 days after surgery is usually normal. After double eyelid surgery, it is recommended to follow the doctor’s instructions to use scar cream to apply, which will help to improve the situation. If the scar proliferation is more serious and has not recovered for a long time, you can go to the regular hospital for laser treatment, which will help to improve the situation. During the recovery period, we must keep the local clean and hygienic, prevent infection, if there is any abnormality, we should go to the regular hospital in time.