Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs How to Use GHK Cu Repairing Serum SumaNurica GHK Cu Copper Peptide Face Tonic (30 mL) Reduces Appearance of Fine Lines Supports Skin Firmness Grass Fed Beef Tallow & Copper GHKCU Peptide Soap Bar with Coconut Oil Shea Butter for GHK Cu might be trending, but it's not new. Before you inject yourself with this viral peptide, consider this. This copper peptide has been studied for years in skin repair and collagen signalling, GHK Cu Peptide Before and After Results