Hello, the cut double eyelids are permanent, but the buried double eyelids are not permanent. Double eyelid surgery is to cut the upper eyelid, adjust the position of levator palpebrae muscle tendon connected with the eyelid skin, rebuild a new double eyelid, and make the eyelashes upturned. The advantage is that you don't have to do it in the future, and you can keep it forever. You need to choose to go to a regular professional hospital to cut your double eyelids, and pay attention to nursing after operation to avoid unnecessary infection.