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We Tried It: The Best Ways to Whiten Your Teeth at Home

The FITNESS editors brush up on the newest at-home teeth whiteners. Hear what we had to say about each product, and see the proof in our before-and-after result photos.
Listerine Whitening Pen Listerine Whitening Pen

The cost: $12.99
Where to buy: Available at most drugstores
The plan: Since it comes in convenient packaging, a thin layer of this hydrogen peroxide whitening gel can be used whenever and wherever for up to two weeks.