Economy Size Non-GMO Soy-Free Supports Healthy Hair, Skin and Nails Suitable for Vegetarian and Vegans Supports Energy Production Dietary Supplement Biotin (Vitamin B7) is a water soluble, essential B vitamin which is naturally found in bread, liver, pork, salmon, avocado, cheddar cheese and egg yolks. It may also be found in certain bacterial colonies in the large and small intestines. Biotin is widely known for its importance in cellular development and its assistance in fatty acid, carbohydrate, glucose and amino acid metabolism. Biotin is also a very important nutrient in hair, skin and nail health.