This product is formulated for the quick and easy removal of mineral deposits and lime scale. It cleans, deodorizes, and descales the oxidation and corrosion from a variety of surfaces. Is safe for stainless steel and ceramic tile, works extremely well on shower stalls and restroom fixtures. Will remove lime, calcium, iron, rust, and magnesium which cause hard water stains. Will also remove alkaline, detergent residue, soap scum, coffee and tea stains, as well as milkstone. Gallon.