Rich in protein and fiber, these little seeds offer a payload of omega-3 fatty acids, which erase spots and iron out fine lines in the skin. The British Journal of Nutrition reported that participants in one study who downed about half a teaspoon of omega-3s daily in 6 weeks experienced significantly less irritation and redness, along with better-hydrated skin. A recent study of people with high cholesterol (greater than 240 mg/dL) compared statin treatment with eating 20 grams of flaxseed a day. After 60 days, those eating flaxseed did just as well as those on statins. Try sprinkling ground flaxseed on oatmeal, yogurt, and salads.