The limescale has penetrated deeply into the stone and has damaged the polish of the surface. Removing these deposits without further damaging the surface is impossible. The surface can, however, be touched up, so the unsightly stains no longer show as prominently. Mechanically remove the surface deposit with a white pad and Lithofin MN Power-Clean. A shadow or a dull spot will remain visible. Protect the surface with Lithofin MN Stain-Stop and regularly apply Lithofin MN Polish Cream.