Regards, Dr Carlos Alberto Ríos regrets that you have been victim of the terrible practice of biopolymers. Infections can occur because of the inflammatory process that affects the patient's inflammatory response; so yes, infections can occur, sometimes silent infections remain, silent in the product that is encapsulated and for some reason can lead to infections. Please remember to be aware, do not let any permanenrt filler to be injected into your face, breast, buttocks, calfs, genitalia, etc. The safest way to increase buttocks is through your own fat injections or through silicone implants. I hope the information was usefull, have a nice day! Dr Carlos Ríos.