Brush up on what you brush with: Of 44 tubes tested, these squeezed out the others.
By Sarah Smith
Aquafresh Iso-Active Whitening Fresh Impact
This gel's plentiful bubbles froth up when they hit your tongue and penetrate deep between teeth, leaving behind a well-scrubbed feel.
To buy: $4 at drugstores.
Arm & Hammer Whitening Booster Plus With Enamel Strengthening
If you already have a toothpaste that you love, top it with this liquid-calcium concentrate. It lightens stains and can help fill in tiny cracks.
To buy: $5.50 at drugstores.
Colgate Total Enamel Strength
The gel-paste hybrid keeps your mouth feeling clean and fights germs for 12 hours. Plus, it protects enamel from acids found in foods and drinks.
To buy: $3.50 at drugstores.
Pro's Healing Pick
Tom's of Maine Clean & Gentle Care
"It soothes bitten cheeks, sore gums, and even an achy throat with licorice root," says New York City periodontist Greg Diamond.
To buy: $5, tomsofmaine.com
Burt's Bees Fluoride-Free Natural Whitening Toothpaste
This herbal wonder fights plaque with cranberry extract, polishes with silica, and it contains no artificial flavors, colors, or sweeteners.
To buy: $5, burtsbees.com