Not all copper peptide serums are formulated the same Before you buy one, make sure you're actually getting pure GHK Cu at the right concentration not just a diluted blend. We spent GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness Buffet" + Copper Peptides 1% The Ordinary Sephora GHK Cu Organic Serum Copper Peptide for Anti Aging & Skin Repair Ahk Copper Peptide Serum Etsy