Your skin heals better when your barrier is strong. Topical GHK Cu peptide helps support that process GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution GHK Cu Copper Peptide Neck & Face Serum 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