Blue Copper Peptide Ghk Cu 99% Care Ghk Cu 50mg 100mg vials Cosmetic Ingredient GHK GHK CU and blue copper 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 Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum