Private Label Advanced GHK Cu Copper Peptide Face Cream Anti Age Improve Elasticity Blue GHK Copper Peptides Powder Moisturizer GHK Cu Copper Peptide Skincare Bundle RegenMed Direct Copper Peptide Barrier Cream Yunasence GHK Cu with Ceramides YUNASENCE GHK CU Face Cream: Anti Aging & Firming Solution 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