Here are the benefits of walnut oil … As our society continues to learn more about natural substances and the many benefits they can provide for both beauty and health, we often discover things we might never have expected. Over the last few decades we have come across the benefits that walnut oil has for our skin, hair and health as well. Walnuts have always been known as a great source of Omega-3 fatty acids. Walnut oil is a very good antioxidant and helps fight aging really well. Walnut Oil Benefits For Hair. But today’s pollution-filled environment hardly fulfills our dream. It is extremely good for your skin . The Benefits of Walnut Oil for Your Hair and Skin. They were consumed as nuts since time immemorial. We all dream of those beautiful looking tresses, free from all problems.