It is possible for you to be allergic to almost anything, including toothpaste. Allergies to a toothpaste tend to be specific to the mouth, including severely dry and chapped lips and sores. You also can experience general allergy symptoms from a toothpaste.
Whitening toothpastes may not be able to brighten teeth overnight, but they can help to remove stains and diminish yellowness over time. Here, the best whitening toothpastes you can buy, according to our testing.