While not all of the injected fat from a Brazilian butt lift will survive to augment the buttocks, the idea behind the Brazilian butt lift is that the majority of the fat grafts used will establish themselves permanently. At about the six-month mark, patients will be able to see how much of the fat transferred is permanent.
The fat cells that don’t survive are absorbed by the body. To compensate for the inevitable loss of some fat, surgeons sometimes overfill the area during surgery.