HG professional limescale remover (hagesan blue) 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. HG professional limescale remover (hagesan blue) also removes rust – dirt – ‘yellow’ stains and verdigris. And HG professional limescale remover (hagesan blue) is – of course – 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.