Strawberries: Eating more vitamin C-rich foods, such as strawberries, may help to ward off wrinkles and age-related dryness, suggests research from 2007 in the American Journal of Clinical Nutrition. Vitamin C’s skin-smoothing effects may be due to its ability to mop up free radicals produced from ultraviolet rays and also its role in collagen synthesis. (Vitamin C is essential for collagen production.) You can find vitamin C in a multitude of cosmetics—of which some have been shown to be effective in protecting skin—but why not go straight to the source for a tasty boost of C: red bell peppers, papaya, broccoli and oranges are other excellent sources.
Tomatoes: Tomatoes get their red hue from lycopene, a carotenoid that may help to keep your skin smooth. In a study published in 2008 in the European Journal of Pharmaceutics and Biopharmaceutics, researchers found that of the 20 individuals studied, those who had higher skin concentrations of lycopene had smoother skin. Boost your lycopene intake with fresh summer produce like watermelon and carrots too.