A teeth-whitening powder activated by the vibrations of an electric toothbrush not only brightens, but also protects, teeth.

From in-office treatments to at-home kits, learn what really works and how to preserve your smile’s brightness over time.

Teeth whitening often involves bleaching the teeth to remove stains and discoloration. The best teeth whitening products provide noticeable results without damaging the teeth or irritating the gums.

Dentists talk charcoal toothpastes, flavored coffees, post-meal water rinses and more. Dentists talk charcoal toothpastes, flavored coffees, post-meal water rinses and more. Credit...Naila Ruechel for ...