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When Toothpaste Meets Marble

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The most popular places where marble is finding a home are the kitchen and the bathroom. While kitchen marble is facing harrowing challenges with wine stains, bathroom countertops face equally destructive challenges but with an unlikely foe: toothpaste. It won’t completely destroy your stone but it could certainly alter its appearance in unpleasant ways. There are, however, ways to save it. 

It’s funny to think that this stone has withstood the test of time, battled shifting tectonics and every obstacle Mother Nature could throw its way, but something as simple as tooth paste can cause so much damage. The fact that tooth paste is man-made has something to do with it.

12 percent of the Earth’s crust is made up of metamorphic rocks like marble. Early on, it was limestone which eventually metamorphosed into what it is now. This unique mineral composition reacts poorly to certain substances and among them is toothpaste, which has a high pH level. Fluoride is an ingredient in toothpaste that is the most acidic and damaging in its acidity. Because marble doesn’t react well with substances that aren’t pH neutral, calcium carbonate then dissolves the stone within. 

These high in pH level toothpastes will cause staining and etching, which is something that requires a real professional to fix. Stains can be removed easily but etching causes stubborn spots that are difficult to buff out. 

If toothpaste finds its way onto your marble, it’s nothing that a simple sealing procedure can’t fix. The protective shield caused during sealing prevents toxic substances from leaving their marks. So keep your eye out for toothpaste and if there should be a spill, be sure to wipe it immediately or use a high grade marble cleaner. 

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