Buttock implants can do littile to shape the lower part of your buttocks, but fat injections can. Some refer to fat grafting to the buttocks as Brazilian butt lift.

Despite the increase in research on fat grafting to the butt, many questions remain. For example, there is no exact science behind how much fat to harvest or inject. The fat that is injected must develop its own blood supply to survive — and, on average, just half of it does. This means that 50 percent of the injected fat dissolves. To compensate, some plastic surgeons will over-inject. They don't always get it right, and repeat treatments are often needed.

It also is true that this area of the body tends to lose a greater percentage of the injected fat than other areas because of the constant pressure placed in the area when we sit.

Additionally, fat grafting to the buttocks and elsewhere is considered to be extremely technician dependent.

Brazilian butt lifts and other fat grafting procedures use liposuction to extract fat from your thighs, abdomen or flank. This excess fat is then purified and re-injected into your backside. There are many techniques that can be used for processing and re-injecting the fat.

Fat injections can be done in conjunction with butt lifts. They should not, however, be done at the same time as butt augmentation with implants because this increases the risk of infection, implant extrusion and poor cosmetic results.

Risks associated with the Brazilian butt lift include asymmetry, infection, scarring and cosmetic dissatisfaction.

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