This 3M One Step fiberglass wax features high-performance polyurethane that becomes tack free in one hour and fully cures in approximately 24 hours. For Heavily Oxidized Finishes. Combines rubbing compound and wax in one application. A special of rubbing compound with carnauba and other waxes, designed to remove medium to heavy oxidation, chalking, water spots, rust and exhaust stains on fiberglass/gelcoat and marine topside paints. Products a high gloss and provides protection. Once restored, use a 3M Marine Wax for regular waxing.