Do you lose a certain percentage of fat after a fat transfer to your butt?

The answer is unequivocally yes, but, how much?  Any time fat is moved from one area of the body to another a certain percentage will be lost.  In BBA, most of the fat is injected directly into the gluteus maximus muscle.  It has been shown that 75% of this fat injected directly into muscle is still alive at 3 year follow-up.  This is a very good number and thought to be attributable to the rich blood supply of the muscle.  So, the fat injected above the muscle probably has a lower survival rate in the range of 50%.  This means on average you will lose between 25% and 50% of the total fat injected at surgery.  This number can be influenced by the harvesting techniques utilized and the skill of the surgeon.  Therefore, it is imperative to find a board certified plastic surgeon that is experienced in this procedure.  Good luck in your process.

I think that in general, what you see initially is not what you end up with. This often is related to both swelling and some loss of the fat injected. I find that  most patients retain about 60-70% of the fat.

There is some degree of fat resorption that happens after fat grafting to the buttocks. The exact amount is variable. This can vary from 20-40% resporption of the fat. Good luck. 

Thank you very much for your question.Yes, it is thought that a certain percentage of fat is lost after fat transfer.  I expect about 70-80% of the fat I graft to "take".  For this reason, I typically try to overcorrect slightly, expecting it to shrink down somewhat.  Sometimes more takes, and sometimes less takes.  It's not an exact science.

There is a loss of fat in the process. However, the percentage of loss will vary from surgeon to surgeon depending on the technique, expertise, and skill of the surgeon.