If you’re dealing with day-to-day surface stains from yellowing beverages or other lifestyle habits, a whitening toothpaste can help you scrub away this discoloration before it becomes a permanent part of your smile. However, this typically takes between two and six weeks of regular use. If you want a whiter appearance with the first application, you can achieve this through something of an optical illusion.
Look for a whitening toothpaste that contains blue covarine. This chemical diminishes the yellow appearance on the surface of the tooth. The result is immediately perceptible, though not as long-lasting as other methods of tooth whitening. It’s best to combine the optical properties of blue covarine with other approaches to tooth-whitening.
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