Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs 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 What Are Copper Peptides? Benefits and Uses Explained by Dermatologists Cosmetic Grade Raw Material High Purity Powder Solution 89030 95 5 GHK Cu Blue Copper Peptide GHK Cu Topical: The Ultimate Copper Peptide Serum for Skin Rejuvenation Cellular Glow Copper Peptide GHK Cu Serum for Face