Loose and sagging facial skin is actually a manifestation of skin aging due to some natural and unnatural factors. Since birth, the skin tissue is gradually developed and grows, but after reaching a certain age, it starts to degrade, and this degradation often occurs unconsciously, usually starting at about 25 years old. As we age, the subcutaneous tissue volume of the skin is missing, the dermis of the skin thins, the skin and the subcutaneous tissue elasticity is missing, and the elastic fibers and collagen fibers that support the skin gradually become shorter in diameter and secrete less. In addition, the fat of the skin decreases and sags, and the bones of the maxillofacial region deteriorate. All of these factors lead to loose, sagging skin on the face.