Lost volume MONTHS after bbl, can I still fix it or do I need another surgery?

Dear Future_Doll13,
most patients lose 30-50% of transferred fat while healing from surgery. Fat viability depends a lot of surgeon technique. The fat has to be placed back into the buttocks as soon as possible so that it has a greater chance of survival. It has to be placed carefully so that not too much fat is placed in only one area.
I understand your concern. However, without a proper assessment it would be difficult to determine what is wrong. It is best that you visit your plastic surgeon for further assessment. Only after thorough examination you can get proper recommendations and advice.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery 

Thanks for your question. You are likely seeing changes as a result of decreasing swelling.  After surgery there is a predictable swelling process that mostly resolves over two months, when the final result really settles in.  A second round of fat transfer can be a good option if you have enough fat available. You definitely have to choose your surgeon correctly and make sure that he/she has the training and experience to meet your goals with absolute safety.  Best is a Board Certified Plastic Surgeon with specialized expertise in this procedure.

It is difficult to answer your question from the photos provided. Having the BBL done a second time is an option as long as you have enough fat to be transferred. The revision implies that there is less fat than the first time, and scar tissue will make the surgery much more difficult on the surgeon.  The percentage of fat survival in the BBL the second time should be about the same. Recommend that you set up an appointment with the PS who performed your first BBL to discuss your options.
Kenneth Hughes, MD, ABPS Board Certified Plastic Surgeon
Los Angeles, CA

It is difficult to answer this question without assessment and knowing your expectations before the surgery 
The resorption of the fat is always difficult to predict and has to be discussed with your surgeon 
I always tell my patients that the most important thing in this procedure is the curve that we give you after the procedure by the liposuctions in the target areas.

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Respectfully,
Arian Mowlavi MD, FACS
Realself 100 Hall of Fame Inductee

most people lose the volume after a BBL within the first six weeks. Some volume is lost after that as well. Typically by six months the volumes have stabilized and patients don't see much change after that.  You should make an appointment with your provider and discuss your results with him or her.  Best, Mats Hagstrom MD