The Brazilian Butt lift is a relatively new procedure and there are several ways that it is performed. The fat is harvested via liposuction and then processed so that only pure fat remains for the augmentation.
The actual injection of the fat is done in small even aliquots so that the injected fat is surrounded by natural tissue. The fat can be injected into several planes depending on the amount of fat that needs to be injected for the desired augmentation. In large augmentations, such as greater than 1000cc the fat will need to be injected in to all of the various planes for the augmentation.
The use of blunt cannulas and small even injections allow for the placement of large amounts of fat both above and in the muscle during you Brazilian Butt Lift.