This CRL A-Maz Water Stain Remover removes the toughest stains on glass, chrome, porcelain, fiberglass, metal, tile - water stains, mineral deposits and sealant stains. It can also be used on all types of bathroom surfaces to remove lime scale, oxidation and soap scum. A nylon pad is provided with product. Note: Do not use on surfaces that can be harmed by the use of a mild abrasive.