Keratin and biotin are commonly confused as both are used to increase the strength of hair, skin and nails. However, the difference between keratin and biotin is that biotin is a water-soluble B Vitamin and keratin is a fibrous structural protein. Biotin can enhance the cell growth of amino acids, the building blocks of protein, whereas keratin is the protein itself. Biotin supplements feed the body nutrients to create enzymes and indirectly boost the production of amino acids, the building blocks of keratin, but taking Cynatine HNS is a far more direct route. In the debate of keratin vs biotin vs collagen, it is far more efficacious to take biotin and Cynatine HNS than any collagen supplement. Collagen is also a structural protein in the skin but collagen supplements are widely disproved with scant evidence to suggest any existing nutraceutical has the delivery method to allow it to be absorbed by the body.