Bar Keepers Friend‚ Original Powder Stain Remover was developed over 100 years ago in America. This high-performance cleaner uses the natural power of oxalic acid, found in rhubarb and parsley. It cleans a wide variety of household surfaces including: stainless steel, china, brass, copper, worktops, chrome, tiles, laminates, grouting, saucepans, sinks etc. It also removes a multitude of marks and stains including: tea and coffee stains, soap scum or limescale, baked-on food and rust.