What can I do about shrinking badly after my second BBL?

Nine hundred ccs of fat is not alot to make a difference in light of the fact that 50% may not obtain permanence.  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 as the first. The volume loss occurs over the first 6 weeks or so.  After that period of time the volume remains stable assuming weight is maintained.  

Dear benitajiurn,I instruct my patients not to sit for 2 solid weeks. We provide them a specialized pillow that our patients can sit on during that time. They can sleep on their stomachs or sides. 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

Volume loss after BBL is caused by inappropriate fat harvest as traditional techniques result in injury to the fat cells. These fat cells may demonstrate gains at the begining but eventually peter out since the body removes damaged fat cells. Instead, you want to consider VASER liposuction for your fat harvest which will result in 90+ % graft take.If you are a candidate for a Brazilian Butt Lift (BBL), the optimal outcomes are achieved with: 1) use of VASER liposuction to harvest the fat, 2) a closed looped system such as Puregraft to process the fat, and 3) strategic micro-packet transplant technique. These three processes have demonstrated over 95% fat graft take. This means that your results will be stable as long as you maintain your weight. As an official VASER trainer, I am routinely referred unhappy BBL patients. One of the most common reasons for disgruntled BBL patients is that patients are not able to accurately communicate their desired buttocks goals to their surgeons.  A buttocks assessment tool can be an invaluable tool to communicate to your surgeon the exact buttocks size and shape you are desiring. A Skype or Facetime consultation with a BBL specialist can help you get an accurate recommendation and pricing. 
Respectfully,
Arian Mowlavi MD,FACS
Realself 100 Hall of Fame Inductee