Just like in the foods you eat, antioxidants found in the products you apply to your face are effective sun protection. Dr. Graf likes Glytone Antioxidant Anti-Aging Serum, $120, whose skin-saving ingredients include vitamins C and E. We also like Caudalie Polyphenol C15 Anti-Wrinkle Defense Serum, $62, which combines stabilized grape seed polyphenols and vitamin C to fight sun damage and protect the skin. Layer one of these under your moisturizer and sunscreen.