A healthy, balanced diet provides enough lipids for skin hydration. However, sometimes your skin needs an extra helping hand, particularly during winter when it has to confront harsh weather. It that's the case, you should add some fat to your diet. A bit of butter on your toast at breakfast, a couple of spoonful of oil in your salad dressing or cooking water, or drizzle some oil on a filet of fish. Nut and rapeseed oil are packed with omega 3, while grape seed oil contains other essential fatty acids. These oils are bursting with essential fatty acids and vitamin E, all of which hydrate the upper layers of the epidermis and, thanks to their antioxidant content, zap free radicals.