Multi Collagen Plus Biotin and Vitamin D is a high potency formula designed to support naturally healthy hair, skin, nails, bones and joints. Dr. Emil biotin vitamins for hair skin and nails combine 5 collagen peptides into an effective blend for maximum efficacy and absorption. Biotin and Collagen together are a super-blend for a brighter and more youthful appearance. The biotin supplement contains the amino acids your body needs to produce a structural protein called keratin that makes our hair and nails thicker and stronger, improves skin elasticity, and reduces dryness for a more youthful glow. Dr. Emil collagen and biotin supplements should be taken three (3) times a day, with at least 8 oz of water or as directed by a healthcare professional.