2 Best Teeth Whiteners -- and the 4 Worst
See which products made our testers smile -- and which made them gag
How long it takes: three days
Pros: "The trays were disposable and pain-free, and you could go about your day as usual while they're working. Teeth were whiter by the third day, so I definitely saw results." -- Stacey, tester
Cons: "One complaint: The gel filling in the trays tended to leak out and you had to spit out globs of it -- not pleasant."
Last word: "I would definitely use this kit again. It's cheap, showed results and was much easier (and covered more teeth!) than my usual Crest Whitestrips."
SEE NEXT PAGE: Best: Supersmile Professional Whitening System, $36