Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend Peptide Therapy for Skin Rejuvenation LIVV Natural GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link