Use on glass, plastic and acrylics, aluminum, fiberglass, tile, stainless steel, brass, copper, painted surfaces and enamel finishes. Instantly removes hardwater spots, encrusted calcium/lime deposits, heavy green tarnish, heavy oxidation, rust, corrosion, grease, oil, water stains, soap scum build up. NOT for use on marble, some granite, Jura, travertine and terrazzo.