Mineral X is a safer, reduced toxicity alternative to harsh acid-based mineral cleaners. With a unique blend of organic salt and degreasing agents, iron & mineral deposits are easier than ever to remove. Mineral X is non-regulated for shipping, handling and storage. Removes hard water build up, rust and soap scum from hard surfaces. Non-Corrosive to skin. Biodegradable and Non-Fuming FOR USE ON: Showers, tubs, ceramic tile, grout, toilets, sinks, urinals, stainless steel, polished metal, porcelain, fiberglass, glass, brick and stone.