The human skin will age with the passage of time. In addition to the aging of the epidermis, muscle sagging caused by fascia and ligament relaxation is a deeper cause: the problem of relaxation of the superficial myofascial system of SMAS. It is a layer of connective tissue film that covers the deep subdermal tissue and connects the fatty subcutaneous tissue with the superficial muscles. It is closely connected with the skin (epidermis, dermis) and subcutaneous tissue (fat) to form a facial contour, which supports the integrity of the skin, muscles and bones. With the increase of age, the amount of collagen in the SMAS layer gradually decreases, causing facial muscles to relax and sag, deepening the wrinkles, and even the eyebrows bulging, and the signs of aging begin to appear.