One of the major differences between regular toothpaste and whitening toothpaste is the addition of abrasives. Regular toothpaste may contain abrasives as well. However, toothpaste that promotes whitening will have a larger quantity of abrasives. The abrasive substances in the toothpaste are used to scrub away stains from the surface of the tooth’s enamel. It is important to note that the size and hardness of the abrasive will also differ between toothpaste.

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