Whitening toothpastes are designed for regular application at least twice a day. For the best results, users must brush daily with these products for several weeks. Products that don’t contain blue covarine can still yield impressive results. However, it’s important for users to understand that the whitening isn’t usually visible after the very first brushing.
Whitening toothpastes achieve long-term results through a combination of abrasives that polish the teeth and chemicals that break down stains. Common abrasives found in whitening toothpastes include:
- Hydrated aluminum oxide
- Calcium carbonate
- Magnesium carbonate
These toothpastes may also contain carbamide peroxide or hydrogen peroxide which help whiten teeth. Carbamide peroxide works faster, but these ingredients bring about the same overall degree of colour change over a period of two weeks.
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