Biotin is a vitamin, commonly found in what we eat such as eggs, milk, and biotin, although they don't supply a large amount of this vitamin. Biotin is an important component of enzymes that break down certain substances like fats, carbohydrates, etc. Because of that, it is thought that biotin can help with hair loss, brittle nails, facial rashes, and even depression, fatigue and tingling in your arms/ legs. Learn more about the most important ingredients to support hair, skin and nails. Simply Nutrients offers biotin supplements to help support your health.