GHK Cu 200mg (Copper Peptide) (Topical) Official Peptide Sciences 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 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 PEPTIDE SCIENCES GHK CU