where do collagen peptides come from？

Great question. Technically speaking, collagen peptides don’t exist in nature on their own—they are derived from native collagen. Most of the commercial peptides we use in formulations come from the connective tissues, bones, and skin of animals. The big three are bovine (cow), porcine (pig), and marine (fish).

To get the “peptides,” the raw collagen goes through a process called enzymatic hydrolysis. This breaks down the long, complex amino acid chains into short, easy-to-absorb peptides. If you skip the hydrolysis step, you just end up with gelatin!