The mild, buffered acid in Simple Green Lime Scale Remover - commonly used in the cosmetic industry - provides an important difference from other scale removers which can strip protective finishes from porcelain, tile and plumbing. Specially formulated to effectively dissolve and remove mineral deposits, hard water stains and soap scum - without the damage that harsher removers can cause. Simple Green Lime Scale Remover has a pleasant wintergreen scent that leaves rooms deodorized and fresh smelling. Won't harm drains or pipes, including PVC.