Reliable cleaner effectively dissolves mineral deposits, hard-water marks and soap scum without the use of dangerous acids or hard-to-dispose-of phosphorous. Regular use helps protect porcelain, ceramic, glass and metal surfaces from discoloration. Safe, nontoxic organic-salt formula leaves protective finishes fully intact. Application: Descaler/Cleaner; Applicable Material: Ceramic; Fiberglass; Plastic; Porcelain; Stainless Steel; Tile; Dirt Types: Mineral Scale; Soap Scum; Scent: Wintergreen.