By InStyle Staff
Updated May 07, 2011 @ 7:00 am
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Time Inc. Digital Studio

Are you ready to banish dark circles, brittle nails and melty makeup once and for all? Then check out our definitive guide and consider all of your peskiest beauty problems solved! We tapped dermatologists, makeup artists, and beauty editors to share their pointers on fading acne marks, saying goodbye to under eye shadows, and picking the right products. Click through the gallery to find answers to your beauty questions!