Today something relatively specialized for those who are interested. I should say that autologous fat grafting is a very, very old program that was done by plastic surgeons more than 100 years ago, but it has always been a half-dead program, and not many doctors have done it. With the invention and popularization of swollen liposuction technology 30 years ago, liposuction has become increasingly safe and effective. Coupled with the structural fat grafting (Coleman) proposed by an American 20 years ago, fat grafting program seems to be like a dead tree spring rejuvenation of brilliant vitality, especially in recent years, the U.S. FDA allows the breast augmentation of autologous fat, particulate fat grafting and nano-fat grafting and other new concepts, fat grafting has become one of the hottest cosmetic surgery projects, no less than botulinum toxin and hyaluronic acid and other injections. . Well, there are many benefits of using autologous fat for filler grafting. So, I guess the biggest concern for you guys is the “survival rate” of the fat. This is an inherent problem of fat grafting itself. How to increase the fat survival rate and reduce the absorption rate? Some foreign doctors have done a lot of investigation and research, summarized a large number of high-quality clinical literature, and came to the following conclusions: 1, there is no obvious difference in the vitality of fat cells in different parts. Some domestic experts believe that the fat of the thigh is better than the fat of the abdomen. In fact, this is unfounded. There is no difference in fat cell viability in different parts, nor is there any difference in stem cell content. Therefore, the clinical decision of where to take the fat is mainly to respect the wishes of the client. The most commonly taken or thighs and abdomen. 2.Lidocaine, a local anesthetic, has an effect on fat cell viability. It is true that lidocaine affects the metabolism, growth and survival of fat cells, but this is only true if lidocaine is always present, and if lidocaine is removed by washing after the fat has been extracted, then this effect does not exist. 3, syringe liposuction and machine liposuction both have no difference in the effect on the survival rate of fat cells. 4, fat extraction after purification using washing also centrifugation, the effect on fat survival is no difference. 5, fat suction, purification and injection and transplantation should be gentle, the shear force on fat cells should be small, otherwise, the damage to fat cells is greater. 6.Fat should be purified and injected as soon as possible after extraction, the longer it stays outside the body, the lower the survival rate. 7, fat injection should be uniform, the size of the diameter of the fat mass injected at each point should not be more than 1.5mm, otherwise, the center part of the fat mass will be necrotic due to the lack of absorption of nutrients. Common facial fat filling areas are forehead, temples, root of nose, bridge of nose, apple muscle, cheeks, chin and other areas. Each person’s underlying conditions are different, and so is the amount of injection: the forehead needs about 30-50 ml, temples 10-20 ml on each side, and the apple muscle at least 3 ml. The exact amount of filler needs to be based on the doctor’s experience and aesthetics. There is only a small needle hole at the injection site, which is relatively small and usually does not need to be sutured with thread, just seal the needle hole with erythromycin ophthalmic ointment and then put on a sterile patch. Theoretically, fat babies are delicate, neither cold nor heat resistant (the principle of cryolipolysis and ultrasonic lipolysis is to utilize the characteristics of fat that is neither cold nor heat resistant), and many doctors recommend neither cold nor hot compresses after the procedure, and let nature take its course in recovery.