A soft abrasive powder with a tiny acid component that cleans and de-oxidizes metals. It's the perfect pre-patina cleaner that ensures smooth, even coloring every time. Especially effective in preparing copper for enameling and can replace acid solutions. Apply generously to wet metal and rub gently with a sponge. Removes all contaminants from nonferrous metals. Make a paste for removing heavy oxidation. Provided in a 5 oz. shaker bottle.