Amazon.com: TOSOWOONG Copper Peptide Face Serum, Anti Aging with Copper Tripeptide, GHK Cu, 12 Multi Peptide Formula for Fine Lines, Firming, Skin Elasticity, Hydrating, Korean Skincare, 33ml 1.11 fl.oz. : Beauty & Personal Care Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit GHK Cu Peptide Therapy Topical Cream BHive Management G H K the beauty peptide everyone's talking about If you're serious about skin health from the inside out, GHK (glycyl L histidyl L lysine) is one to know. Naturally found in the body, 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