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 Your skin already knows how to healsometimes it just needs the right signal GHK CU is a powerful copper peptide that supports: Skin repair Collagen production Smoother, brighter complexion WO2019167070A1 Topical copper tripeptide composition and process of preparation. Google Patents Most people don't know GHK Cu by name. Their face does. It's the peptide your body uses to signal collagen production, repair tissue, and keep skin behaving younger. Production drops sharply with GHK Cu 50mg vs 100mg: Which Concentration Should You Buy?