Activated dimethicone powder is a yellowish powder containing dimethicone oil and protein powder. Dimethicone, also known as simethicone, is an antiflatulent with the chemical name trimethyl-trimethylsilyloxy-silane and molecular formula C6H18O2Si. The powder has a shelf life of 18 months when stored at room temperature and specifications include less than 3.0% water content and 24.5-27.1% dimethicone. It is manufactured and sold by Fermenta Biotech Ltd.