Sun exposure (as well as stress) drains this antioxidant from the skin for up to 72 hours, leaving skin vulnerable to damage. The combination of vitamins E and C is especially effective in reducing sunburn damage. Vitamin C also helps maintain collagen, the underlying supporting structure of skin. Finally, vitamin C helps protect the skin from sun damage from both the inside from the foods you eat and even when applied topically.
What to Do? Eat more vitamin C-rich citrus fruits and juices, such as orange, grapefruit, and lime. Kiwifruit, currants, cantaloupe, papaya, strawberries, broccoli, and watermelon are other great sources of vitamin C. Rub a vitamin C serum on your skin every day, just make sure it is at least a 10% solution, since creams and lotions that contain less than that won’t work.