In recent years, plastic surgeons have found through a large number of clinical practices that the effect of tightening and folding the fascia layer on the periosteum and then lifting the epidermis and muscles is quite different. In this way, in the same relaxed state, the face can lift more drooping skin, and by lifting the folding fascia SMAS, the skin can be tightened from the deep, so that the facial muscles and skin look real and natural without tension.