GHK Cu Copper Peptide Benefits, Uses & Safety Intra V 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, GHK Cu, a copper peptide, is a naturally occurring peptide made of three amino acids bound to copper that improves collagen production, wound healing, inflammation, and tissue repair. GHK Cu helps with: 50mg GHK Cu Vial Blue Copper Peptide Face Serum Age Aging Moisturizing Repairing for Skin Care Serum Facial Care Kit d