Like gelatine, hydrolysed collagen is made by hydrolysis process from Type 1 collagen. The same collagen as that found in human bones and skin. It is a natural product containing more than 97 % protein (on a dry weight basis hydrolysed collagen contains 18 amino-acids, including 8 out of 9 essential amino-acids. It is characterized by the predominance of glycine, proline and hydroxyproline, which represent around 50 % of the total amino-acid content. This specific composition of amino-acids provides hydrolysed collagen with functional properties that cannot be found with other protein sources.