Hydrolysis is the natural intestinal process of breaking down whole proteins found in food and supplements into smaller proteins, called peptides (Micro Peptides), and amino acids.
DH is the Degree of Hydrolysis, which indicates the extent to which the protein has been broken down. Higher DH means more rapid and complete absorption. In order to be absorbed, protein must be hydrolyzed down to amino acids or to the smallest peptides, called di and tripeptides.
Whole proteins, including whey isolates, concentrates, caseins, soy, and blends are large proteins and naturally contain little to no Micro Peptides, and no di and tripeptides. Proto Whey is 100% Micro Peptides, of which, up to 40% are di and tripeptides.