GHK Cu Topical: The Ultimate Copper Peptide Serum for Skin Rejuvenation GHK Cu: A copper bound peptide that stimulates collagen and healing. Used for skin repair and anti aging, it may reduce wrinkles, improves hair growth, and boosts metabolism, providing patients with firmer skin and a PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction GHK Cu Skin Care Your skin heals better when your barrier is strong. Topical GHK Cu peptide helps support that process