Feb 3, 2010 9:07 AM
Biotin ($12) is often bandied about as a metabolism booster. We can't speak to its ability to burn carbs at lightning speed, but it does do wonders for your hair, skin, and nails. The B-vitamin complex adds luster to your hair, keeps your skin healthy, and makes those nails strong and long. Always check with your doctor before taking any new pills - they'll make sure the dose is safe for you and ensure there's no risk of an adverse reaction with a current medication.