Powerful multi-use cleaner dissolves even the hardest buildup. Blasts deposits from stainless steel, glassware, tile, glass and fiberglass tea and coffee pots, humidifiers, tubs, toilets and sinks. Zaps rust stains from stucco, brick, porcelain, chrome and metal. Descaling formula is phosphate-, bleach-, ammonia- and alcohol-free. application: multiple surfaces; bathtubs; toilets; sinks; pots; pans; dishwashers; washing machines; humidifiers; applicable material: glass; stainless steel; chrome; porcelain; metal; stucco; brick; ceramic.