Nuts:The benefits of nuts – especially almonds – have to do with antioxidant activity. Vitamin E fights skin-aging free radicals, and also helps your skin hold in moisture.Red and Green Vegetables: Orange-red vegetables are full of beta-carotene. Your body converts beta-carotene into vitamin A, which prevents cell damage and premature aging.Spinach and other green, leafy foods provide lots of vitamin A, too.Citrus Fruits:Vitamin C aids in your body’s production of collagen, which is the protein that forms the basic structure of your skin. Collagen breakdown can leave your skin saggy, and vitamin C will help tighten it back up. Omega-3’s: One of the first strategies you can use to improve your skin health is to make sure you are getting enough high quality omega-3 fats. In general, you’ll want to include plenty of raw, whole foods in your diet, including raw dairy, if you have no dairy allergies, as this is another of the central keys to maintaining youthful skin. Another group of foods worth mentioning are fermented or cultured foods.Fermented Foods: Fermented foods help promote the growth of friendly intestinal bacteria and aid in digestion. They also support healthy immune function, including an increase in B vitamins, omega-3, digestive enzymes, lactase and lactic acid, and other immune chemicals that fight off harmful bacteria.