GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care Copper Peptides Elmhurst IL Chicago Accelerated Aesthetics GHK Cu Peptide Hormone Replacement Therapy Los Angeles GHK Cu (Copper Peptide): A Smarter Way to Support Skin Regeneration Top Rated Scottsdale Med Spa Babyface 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