Hello iamTamikah, I appreciate your questions! Injectable Silicone, Biogel, Hydrogel, and Biopolymers used for body contouring are not FDA-approved and can cause serious side effects that may be permanent. Side effects can include ongoing pain and serious injuries, such as scarring, tissue death, and permanent disfigurement. If the silicone migrates beyond the injection site, it could cause an embolism (blockage of a blood vessel), stroke, and infections. Serious complications may occur right away or could develop weeks, months, or years later. Instead of Biogel injections and other foreign material injectable substances that are deemed medically unsafe, I would recommend you getting a second round of Brazilian Butt Lift (BBL). Unlike short lasting synthetic fillers, re-injecting your own fat may give you natural looking results that last longer, with no risk of rejection. Consult with an experienced plastic surgeon to assess your candidacy for a touchup Brazilian Butt Lift and discuss your particular needs and cosmetic expectations. Best regards! Dr. De La Cruz.