Dissolves soap scum. With powerful citric extracts. Powerful formulas. Safer products. Powerful citric extracts make shower & tile cleaner work harder. When cleaning your bathroom, citric extracts dissolve soap scum and hard water build-up leaving nothing behind but a streak-free shine. Shower doors. Tubs. Tile. Fixtures. Sinks. Glass. With Gunk Guard. A naturally-derived polymer that creates an invisible barrier that resists new messes. Non-Toxic. Biodegradable Formula.