Eliminating healthy fats
If you're trying to lose weight or eat healthier, remember to keep good fats in your diet. The skin requires essential fatty acids to maintain hydration, and your body can't produce them on its own. Healthy fats like the omega-3 fatty acids -- found in walnuts, soybeans and fatty fish like salmon -- help prevent wrinkles, inflammation, dry skin and acne. Olive oil, a staple of Mediterranean diets, contains oleic acid, which is thought to hydrate the skin, protect against skin cancer and increase absorption of omega-3s and other nutrients [source: Long]. Other oleic acid sources include avocados and nuts such as almond and macadamia [source: Calborn].