HG Professional Limescale Remover - 1 Litre is a highly concentrated cleaner for the removal of limescale and calcium deposits from taps, bathtubs, toilets and shower walls and for the descaling of blocked showerheads. This product also removes rust, dirt, ‘yellow’ stains and verdigris. This limescale remover is safe for use on virtually all surfaces in the bathroom and toilet, such as chrome, stainless steel, ceramic, glazed and unglazed ceramic tiles, glass and plastic. Depending on the degree of staining, this cleaner should be used neat or diluted in water, in a solution of up to 1:10. Apply the cleaner with a sponge and allow several minutes for the product to work and remove and rinse off with water.