The Best Teeth Whiteners

Real Simple

The Best Whitening Toothpaste

Arm & Hammer Advance White Toothpaste, $3.60 for 4.3 Ounces

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With peroxide to whiten and baking soda to clean, this paste releases penetrating bubbles and leaves a minty taste that lasts after you brush. "It brightened my coffee-stained teeth and didn't make them sensitive," said one tester.
Time Commitment: The two minutes it takes to brush.
To Buy: At drugstores.

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The Best Tooth Swabs

Gosmile Advanced Formula b1 Ampoules, $89

"Easy and fun to use," these were a hit with impatient testers, who began to see a difference right away (just rub the end of the swab on each tooth).
Time Commitment: Two minutes to apply, plus 20 minutes without eating or drinking, twice a day for 7 to 10 days.
To Buy:



The Best Whitening Strips

Rembrandt Advanced Whitening Strips, $23

Testers who had tried other strips were pleasantly surprised by these. "They noticeably whitened my teeth, were easy to use, and weren't slimy feeling," said one. They also stayed in place and didn't slip around on teeth (a common problem with other strips). Some testers saw results in as little as three days.
Time Commitment: 30 minutes a day for 10 days.
To Buy: At drugstores.

The Best Whitening Trays

Aquafresh White Trays, $35

"I got compliments after using these - people noticed that my teeth were whiter," reported one tester. The flexible trays, which mold to the teeth, are prefilled, so there's no guesswork about how much whitening gel to use. These trays were also particularly effective on stains between teeth.
Time Commitment: 30 to 45 minutes a day for seven days.
To Buy: At drugstores.

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