LinkThe illegal injections contain industrial grade silicone (like bathtub caulking), which is sometimes mixed with other materials such as paraffin and various oils, and injected directly into the breasts, hips, buttocks and other areas. Castor oil may be used in place of silicone and is considered just as deadly. People who are not trained medical practitioners usually do the injections in non-sterile situations such as in motel rooms or private homes. These individuals travel around the country performing the procedure.