Biotin is a part of Vitamin B family that helps in staying healthy. Nature's Bounty Biotin Vitamin Supplement encourages the nourishment and healthy growth of hair, nails and skin. The supplement works as a nutritional aid to improve the dry and dull condition of nails, hair and skin. It works to speed up the process of cell growth by metabolizing energy. This process repairs the broken and damaged cells and helps restore the natural health of skin, hair and nails.