"Walnuts offer up healthy Omega-3 fats that strengthen the membranes of your skin cells, locking in moisture and nutrients that keep it plump and glowing and keeping out toxins that can damage skin cells," say Stephanie Clarke and Willow Jarosh, Registered Dieticians and co-owners of C&J Nutrition in Manhattan. The nourishing fats in walnuts attract moisture from the air, soothing dry skin."These healthy fats may also reduce skin inflammation and play a role in protecting the skin against harmful UV rays," say Clarke and Jarosh. Additionally, these anti-inflammatory agents help to keep your hair looking glossy by reducing scalp irritation.