GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL) GHK Cu 50mg Particle Peptides 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Seraphime Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum eBay