Simple Green Lime Scale Remover uses an organic salt formula to dissolve lime scale mineral deposits hard water stains soap scum and oxidation. The non-abrasive formula won t strip protective finishes cause discoloration etch or damage sensitive surfaces like other harsh descalers. Safe for use on porcelain sinks toilets and tubs ceramic tile glass shower doors and more. Effectively removes build-up and restores shine to aluminum chrome and stainless steel faucets and fixtures.