LUXI blue is a silica-free polishing compound, composed of an alumina oxide abrasive in a water-soluble binder. Because it is silica-free and contains no hazardous material, this compound is safer to use. In addition, its special structure and composition (vegetable fat-based) allow you to use less; the compound stays in place on your buff, minimizes metal loss in process, and is easy to clean up—all while producing an amazing finish. Use this blue universal compound for gold, silver, bronze and brass for scratch removal and final luster in one process. Use with a non-treated muslin or felt stitched buffs running at 3,000rpm.