Bar Keepers Friend Soft cleanser 13-ounces delivers the same power as our classic cleanser & polish, but in a premixed formulation for a quick, consistent clean. This creamy, ready-to-use formulation clings to vertical surfaces, making it an ideal glass shower door cleaner, but it works equally well against rust stains, tarnish mineral deposits, soap scum, and indoor or outdoor grime. Surfaces: stainless steel, brass, Bronze, copper Alloys, aluminum, ceramic, porcelain, glass, Corian. Kitchen: sinks, cookware, stove cooktop and exteriors, oven door windows, countertops (non-stone), plates (buffs out knife marks). bathroom: sinks, bathtubs, and showers, faucets, toilets, tile, and grout. Outdoors: rust stains, grills, vehicles (test first), siding, sporting equipment. Always test first before using, some ingredients may etch or dull delicate surfaces. Do not use on Gold or silver, polished stone such as marble or granite, and lacquered, painted, or mirrored surfaces.