Canned tuna. It's packed with selenium—a nutrient that preserves elastin, which keeps skin smooth and tight. Selenium also prevents free radicals that are produced by UV rays from damaging skin cells, protecting against sun damage.
Safflower Oil. If you have dry, flaky, or itchy skin, take note: This common cooking oil doubles as a moisturizer. It contains omega-6 fatty acids, which keep cell walls supple, allowing water to reach the skin. Some research suggests consuming safflower oil can help ease sin disorders like dermatitis, inflammation, acne, and dry skin.