The method of injection can be used for breast augmentation, and there are mainly two kinds of materials: 1. Hyaluronic acid, hyaluronic acid is one of the inherent components of human skin, and its main role is to retain water and moisture. Hyaluronic acid, there are three kinds of large molecules, small molecules and medium molecules, the material for breast augmentation is mainly large molecule hyaluronic acid, because it has a higher degree of cross-linking, which can be interpreted as higher viscosity, so it has the best stability. When it is injected into the breast, it has the effect of filling up and fullness. But hyaluronic acid breast augmentation maintenance time is generally about three months, and both sides of the chest can not play too much hyaluronic acid, so the price will be very expensive. 2, autologous fat, you can take out the parts of the body fat accumulation, such as buttocks, abdomen, inner thigh fat, after refinement, centrifugal processing, and then inject back into the chest with an injector, because the fat is their own, will not produce rejection reaction, is a good autologous breast augmentation It is a good material for breast augmentation. However, too much fat cannot be injected at one time because it will not be fully viable after injection, so if you want to achieve a satisfactory breast size, you may need 2-3 injections to do so.