Things You'll Need
0000-grade steel wool
Many homes use natural stone – such as granite and marble – as a material for countertops in the kitchen and in bathrooms. An unfortunate consequence of the porous nature of most natural stones is its susceptibility to hard-water stains. Cleaning natural stone tends to be a bit tricky, as acidic cleaners can deteriorate the stone's shiny finish, while others simply are not effective.
Wipe the hard-water stains with a damp sponge to remove dirt or any other material that may scratch the surface of the natural stone.
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Dry the natural stone with paper towels.
Buff the hard-water stains with 0000-grade steel wool in a clockwise motion. Buff just enough for the stain to disappear.
Wipe the natural stone with a damp sponge, then dry with paper towels.