I want a brighter smile. Do at-home teeth-whitening products really work, and which ones do you recommend? (d-i-y dazzle).

Although the at-home products are not as strong as their professionally administered counterparts, New York City dentist Steven Fox says, "there's no question they can provide noticeable whitening." One of the easiest options is Crest Night Effects, $14.99, a gel you apply before bed that forms a no-slip coating over teeth while you sleep and won't rub off until you brush the next morning. After about two weeks of use, this hydrogen peroxide-based formula will bleach your bite considerably. If an overnight product reminds you too much of your retainer days, Fox suggests this cost-effective alternative: After your regular A.M. and P.M. brushing, dip a super speedy sonic toothbrush in 3 percent hydrogen peroxide, then run it over your teeth and gums for a minute or so. Tools to try: Amden's Cybersonic2, $99, and the Sonicare Elite 7300, $120. Need a quick touch-up before a big bash? Try the new ingenious Rembrandt Whitening Wand, $14.99. Just swipe this portable sponge-tipped wand over your teeth to score a brighter smile instantly.

flaw fixer

How can I make a scar fade?

The method you should use depends on how long you've had the mark. "When a scar is young--meaning it's red and raised--apply an over-the-counter silicone gel twice a day for about three months," suggests New York City plastic surgeon Thomas W. Loeb. "The silicone blocks the buildup of collagen, which is what creates scar tissue." Try Kelo-cote, $29.95. But if your scar ...