How to whiten teeth naturally
Baking soda can gently polish away stains on the surface of the teeth. Some people worry that baking soda is too harsh and may grind away enamel, but research from 2017 found it to be a safe way to remove stains.3. Brushing with baking soda
Baking soda may also help to fight bacteria, which suggests that it may be able to reduce plaque and prevent tooth decay.
4. Using hydrogen peroxide
Hydrogen peroxide is a mild bleach that can help to whiten stained teeth. For optimal whitening, a person can try brushing with a mix of baking soda and hydrogen peroxide for 1–2 minutes twice a day for a week. They should only do this occasionally.
Hydrogen peroxide may increase tooth sensitivity, so it is not suitable for long-term use or for people who already have sensitive teeth.
5. Whitening with fruit
A 2012 study found preliminary evidence that solutions containing these ingredients could offer modest whitening effects. However, the authors of the study caution that more research is necessary to determine whether or not these enzymes are effective.
