Many candidates feedback that after looking at the photos of lipofilling, they feel like a different person, even the skin has become better, is it not P out? It is normal for those who do not know much about facial fat filler to have such doubts. Next, we will analyze “Why is lipofilling so amazing?” First of all, the aspirated fat is not all fat cells. About 30% of the aspirated fat is mature adipocytes, while the remaining 2/3 consists of a very diverse cell population, also known as the vascular matrix fraction, which includes mainly fibroblasts, fibrous connective tissue, endothelial cells and their precursor cells, immunomodulatory cells and fat-derived stem cells. Secondly, it is not only the purified adipocytes that are filled. The purpose of fat tissue separation is to remove oil, blood, debris and other unwanted components from the swelling fluid, while viable organic components of the tissue, and rich in collagen, as well as potentially unknown stem cell components, will be partially deposited in the extract when centrifugation is done. These components, although not quantifiable, are what we want. Although the exact role of fat or some of its components in skin rejuvenation is still unknown, the findings suggest that fat and matrix components may promote not only capillary renewal but also elastic collagen fiber renewal and structural rearrangement. On the surface, the facial skin will appear to be a little more rosy and smooth. A large number of experiments and clinical observations have verified the following conclusion: long-term observation after autologous fat facial filler will reveal that the dermis of the skin will be thickened after fat filler, and the collagen and hyaluronic acid under the skin have increased. The fat transfer not only reshapes the facial contour, but also makes the skin look rosier and more lustrous after the procedure, and improves the skin tone and texture.