Yes, the results of a BBL are permanent. Approximately 70% of the reinjected fat will permanently remain after the transfer, while roughly 30% of your transferred fat will be reabsorbed into your body. We use a technique to purify the fat cells at the time of harvest to reinject only fat and not blood, oil, or liposuction tumescent solution. Then we use techniques to distribute the fat throughout the recipient site in a way to maximize the survivability of the fat cells. Lastly, final results are optimized by avoiding placing direct pressure on the sites reinjected for 1 month after surgery. We will provide you with a BBL pillow to help avoid placing direct pressure on your butt and hips after surgery. The results of a BBL are subject to age-related changes throughout your lifetime. If you increase weight the fat transferred to your buttock may increase in size, and if you lose weight the transferred fat may decrease in size. However, as long as there are no drastic changes in your weight, you will maintain the new improved proportions of the waist-to-buttock/hip ratio.