Hello, Thank you for your question about how to remove biopolymer from the buttocks. At this time, there are two accepted surgical procedures for the removal of biopolymer injected into the buttocks. To effectively remove biopolymer buttock injections, there is ultrasound-guided, VASER buttock liposuction and direct buttock excision. The ultra-sound guided, VASER liposuction removal procedure avoids the incision across the top of the buttocks. During the ultra-sound guided, VASER liposuction removal procedure, tumescent fluid is injected into the area. An intra-operative ultrasound is used to identify the biopolymer. A VASER probe is used to melt the scar tissue around the biopolymer. Then, I use a proprietary liposuction cannula to remove the scar tissue around the biopolymer as well as the biopolymer itself. The ultra-sound guided, VASER liposuction removal procedure takes approximately 2 to 3 hours to complete depending on the amount of biopolymer. This procedure is performed under general anesthesia. It takes about 1 to 2 weeks to recover from ultra-sound guided, VASER liposuction biopolymer removal. I hope that I have answered your questions removing biopolymer from the buttock. Before you make any decisions regarding biopolymer removal from the buttock, I would suggest you seek consultation with an expert. Please seek an experienced, board-certified, plastic surgeon. Travel out of state if you must to find such a biopolymer removal expert. If you have any more questions regarding biopolymer removal from the buttock, intra-operative ultra-sound guided VASER assisted liposuction or plastic surgery in general, please contact my office. Sincerely, Dr. Katzen(Certified by the American Board of Plastic Surgery and member of the American Society Plastic Surgeons, International Society of Aesthetic Plastic Surgery, American Academy of Cosmetic Surgery, and Fellow of American College of Surgeons and American Board for Metabolic and Bariatric Surgery, Awardee: RealSelf 100.)