The Zep Commercial shower, bath & tile cleaner promises to make surfaces in the bathroom gleam. The product has been specifically formulated to quickly breakdown and dissolve mineral deposits, soap scum, general dirt, rust and hard water scale without the use of bleach. It has a foaming action that reduces the need to scrub, leaving all types of showers, shower heads, baths, taps, sink basins, ceramic tiles and chrome sparkling like new, says the company. It can be used on acrylic, fibreglass, ceramics, porcelain, laminate and Corian.