Are BBLs permanent procedures? If not, how long do the results normally last?

Thank you for your question. With Brazilian butt lift we transfer fat from one area of the body to the other.  These fat cells are transferred in microinjections throughout multiple planes in the buttock tissue so that they can gain new blood supply and live in their new home, providing increased volume and shape to the buttocks.  The fat that survives is there permanently. Around 70% of fat that is grafted is typically expected to survive long term. We also put a little extra to account for loss of fat post operative, which is reabsorbed gradually by the body.

In my patients, they can expect between 60-80% of the fat to survive.  The survival rate depends both on the genetics of your body and the skill of the surgeon.  Post surgery, you should follow the plan laid out to you by your surgeon, and avoid putting pressure on your backside (sitting) when possible.
My recommendation is that you find an ASPS board certified surgeon in your area who specializes in the BBL, and set up an in person consult. An in person consult with an an ASPS board certified surgeon is the only way to determine the best route for your body and your goals.
It is all about designing the perfect plan for You.
Good luck, please let us know how it goes.
-Dr. Constantino Mendieta

After the initial 50% loss during the healing phase, the result is stable over time as weight is held constant.

Thank you for your question. The Brazilian butt lift surgery is a long-lasting procedure. However, if you happen to lose weight, the fat will shrink – and if you gain weight, the fat will expand. In most cases, about 70% of the injected fat will remain in the area, and about 30% will be reabsorbed by the body. Hope this helps,Dr. Newall

Hi and thanks for the question. As you probably know BBL is a fat grafting procedure where living fat cells are moved from one area (typically abdomen flanks or back) to the buttocks and or hips. As long as the cells survive the transfer process, the result is permanent. Now, the body will continue to go through changes over time, so sagging tissues, weight gain, weight loss and other factors may affect the cosmetic result of BBL over the years. However, the actual transfer of fat cells is permanent once they have taken in the buttocks and hips. Best of Luck - Dr. Hardy...

4-6 weeks following the BBL procedure, you can expect 30-50% of the fat to resorb. However, once the fat graft revascularises in the area of injection, it will stay there permanently. 
Since that point on, the size of the butt might vary depending on any weight gain or weight loss you experience. If you maintain a steady weight, the size would pretty much remain constant too.