GHK cu 3% Serum Copper Peptide GHK CU C2 Peptides GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling GHK Cu Peptide Puratek Peptides USA Let's talk sciencespecifically peptide science, and even more specifically GHK peptide science GHK Cu (GHK Cu peptide) is one of the most researched biomimetic peptides in skin health, known for its ability to Blue Copper Peptide (GHK Cu) Guide: Anti Aging Science, Formulation & OEM