Biotin supports the conversion of fats to energy. It aids in cell growth, fatty acid production and the metabolism of carbohydrates, fats and proteins and helps in the development of healthy hair, skin and muscle. Biotin is a water-soluble vitamin that is readily absorbed into the body and rapidly excreted. Deficiencies are rare but are occasionally experienced in individuals with poor dietary practices. As a liver co-enzyme, biotin is involved in critical metabolic pathways.