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 Copper Tripeptide (GHK CU) Peptides at Refresh Clinic Dubai: Price GHK Cu Glow Peptide Stack for Skin Rejuvenation Jennifer R. Berman MD Essential GHK Cu Serum: What It Is, How It Works, and Why It Matters f Bacteriostaticwater.com Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin