This At-Home Teeth Whitening Kit Is On Sale at Amazon

This article was updated in February 2023 to ensure all picks tested and vetted by the Good Housekeeping Institute Beauty Lab were available, in stock and correctly priced.

Sparkling white teeth are one of the major keys to a beautiful smile. In fact, having bright-white teeth can make you look up to five years younger, according to Karen Asp, author of Anti-Aging Hacks: 200+ Ways to Feel-and Look-Younger. But even with the aid of water flossers and the best electric toothbrushes and natural toothpaste, daily wear and tear to your pearly whites can lead to stubborn surface stains over the years. Luckily, there are both professional and at-home teeth whiteners that effectively help erase stains and brighten teeth. They can provide noticeable results both instantly and with use over time.

For the most dramatic and instant results, you'll want to visit your local dentist's office or teeth whitening clinic for a professional whitening treatment, which offers a higher concentration of active bleaching ingredients. The downside: Pro whitening can cost anywhere from $200 to $1,500. That's why experts at the Good Housekeeping Institute have tested the best over-the-counter teeth whitening products to see if the results rival those provided by professionals — and the verdict is a resounding "yes."

Our top picks:

Ahead, GH Beauty Lab scientists and experts share everything you need to know about the best teeth whitening kits and treatments that really work, including options with LED light and for sensitive teeth. Plus, find a full breakdown of how we test, shopping tips and expert FAQs.