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 Two new treatments, now available Copper Peptide Skin Complex brings prescription grade GHK Cu Acetate to support skin repair and renewal at the cellular level. Lash Growth Serum combines bimatoprost and latanoprost, prescription strength GHK Cu Copper Peptide Neck & Face Serum Copper Peptide Solution, 1% Ghk cu in Double Hyaluronic Acid Serum Etsy Canada Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum