This is a very common question that our office in Florida is asked every day. In the United States, there is no material that has been approved for injection into the butt for about augmentation. Unfortunately, there are many unscrew those people that are offering these injections to patients often have very low prices. Patients in Miami have found after they receive these injections that they actually receive materials that were not intended for use in humans. This includes industrial grade silicone and kitchen caulking. These materials can make your body develop very severe scarring and also develop life-threatening infections. In fact, patients in Miami have died after receiving these injections.
Please put your health and safety first and discuss the safe options about augmentation with a plastic surgeon before you make any decision.
Web reference: http://www.miamiaesthetic.com/butt_augmentation_lift.htm