PeptideLabz Copper Peptide 10% GHK CU 5% AHK CU Peptides Hair Growth Treatment Serum, Blue Price SKINHI BLUE01 Copper Peptide GHK CU 1.4% All Over Body Care Size 50ml Aytz Chayim Aromatherapy Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches GHK CU 50mg Peptify