Biotin is B7. It supports hair, skin, + nails. It helps your body convert your food into energy primarily related to the utilization of fats, carbohydrates, and amino acids. *Fine Print: Packaged discounts cannot be combined with other offers, memberships, or promo codes however the higher of the two discounts will be applied. Membership annual cost is non-refundable and becomes voided if switching plans before the end of the annual cycle.