HG Limescale Remover Concentrate is an extremely powerful, super-concentrated product for the removal of limescale and calcium deposits from: taps, bathtubs, toilets and shower walls and for the descaling of blocked showerheads. HG Limescale Remover Concentrate also removes rust, dirt, ‘yellow’ stains and verdigris (copper oxide). HG Limescale Remover Concentrate is safe for use on virtually all surfaces in the bathroom, toilet and kitchen, such as: chrome, stainless steel, ceramics, glazed and unglazed ceramic tiles, glass, crystal and plastic.