Water based stain remover, formulated specifically to remove stubborn coloured based stains such as yellowing, browning and discolouration from all types from marble, granite and natural stone surfaces where traditional poultices are ineffective. Effective for the removal of tannin, urine and nicotine stains and for any remaining purple based haze or residue from the material following the use of B RUST REMOVER or MANGIA RUGGINE. Product does not damage the stone or surface.