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How do you keep your teeth so white?

—Min Polley, Sherman Oaks, CA

Bobbi: A bright smile can really make you look young. I had my teeth whitened professionally years ago. But these days, it's my regular habits that help. I go to the dentist every six months, brush with my fave Tom's toothpaste, and rinse after drinking anything colorful, like coffee or red wine. I also carry those tin floss picks everywhere. Another good portable idea: disposable toothbrushes. A little makeup helps, too—a blue-based pink (think berry or fushia) lipstick adds instant sparkle.

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