Although tremendous advances have been made in the field of structural fat grafting, not all of the grafted fat survives. Expertly harvested and carefully purified fat can yield graft survival in the range of 60-75%. This amount of fat survival is very predictable and you can expect to see some decrease in size after the swelling subsides and the non-viable fat is reabsorbed by your body. The final results of fat grafting can generally be seen after 4-6 months. Some patients return for a second round of fat grafting a year or two after their initial BBL to adjust their size and shape a bit more.