D-Biotin, commonly referred to simply as biotin, is a water-soluble B-vitamin that plays a crucial role in maintaining healthy skin, hair, eyes, liver, and nervous system function. In the pharmaceutical industry, D-Biotin is often used in dietary supplements and multivitamin formulations due to its essential role in the human body. It is vital for the metabolism of amino acids, glucose, and fatty acids. Additionally, biotin is recognized for promoting hair growth and maintaining healthy skin.