GHK Cu Dosage Calculator Draw Volume In ML & U 100 Units Topical GHK cu Gencore Global 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 repair, and GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health