First of all, stop using it. Second, drink plenty of water for about a week (that is, 2 or 3 times more than u normally would, but dont over do it) and maybe some light exercise. Cocain leaves the...
if you are going for shine any jewelers rouge will work. if you are trying for "bright copper" prices at the scrap dealer a concrete mixer with sharp masons sand does a pretty good job. if cleaning...