This is related to two reasons. One is your own skin condition, which is generally elastic and not easy to sag. The skin of the elderly has begun to relax, and it needs to be lifted at the same time to prevent sagging. The other is the technology of the hospital. The surgical design is rigorous and accurate, which can achieve the smallest flesh and blood peeling and is not easy to sag. So I recommend you to go to Korea id Plastic Surgery Hospital, a plastic surgery hospital specializing in facial bones.