2 Best Teeth Whiteners -- and the 4 Worst
See which products made our testers smile -- and which made them gag
How long it takes: Trays are worn for 45 minutes a day until desired whiteness is achieved
Pros: None. "Molding, wearing, taking out -- it was an all around bad experience." -- Melissa, tester
Cons: "It was hard to use, difficult to fit, produced incredible drool and slid around my mouth if I wasn't sitting still. It also stung my teeth on the first use. In order to mold and cut the trays you had to boil water, dip the molds into the water then put directly onto your teeth. This is not fun for people with sensitive teeth -- boiling water with melting plastic against your teeth -- yuck!"
Last word: "I tried a few times, but I could not complete the test as the trays were horribly uncomfortable to wear."
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