GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes GHK Copper Peptide GHK Cu Tripeptide 1 Secret weapon unlocked: GHK Cu , Did you know that GHK Cu peptide is the secret weapon for rejuvenating your skin and hair? , GHK Cu peptide, also known as copper peptide, is a naturally occurring Amazon.com: GHK Cu Copper Peptide Supplement, Anti Aging & Hair Growth Support, Improves Skin Elasticity & Firmness, Thicker, Fuller Hair, Easy Absorption, Precisely Dosed, 90 Vegan Capsules : Health & Household The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget