Toothpaste is unsightly and annoying when it's dried onto your sink surface. Dried toothpaste can seem like a challenge to remove, but it's easier than you think. Calcium stains can also be mistaken for toothpaste stains, but they're more diffuse, covering a larger area of the basin with a white film. They're removed in the same way as dried toothpaste and toothpaste stains. Different sink materials may require different approaches, but with a little water and elbow grease, you can remove the dried gunk and make your sink look as good as new.
Mix a solution of 1 cup vinegar and 1 tbsp. lemon juice and pour it into a spray bottle. Fill the bottle the rest of the way with warm water.
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Thoroughly wet the dried toothpaste with the solution of vinegar and lemon juice. Both are mild acids and will begin to dissolve the toothpaste.
Use an old toothbrush or a small scrub brush to scrub at the toothpaste, rinsing occasionally with clean water.
Spray more of the vinegar solution whenever the toothpaste becomes dry.
Rinse out the basin thoroughly.