GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link Aesthetics Infinity Medical Institute GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health Everything you need to know about GHK Cu WHAT IS IT? A copper peptide your body naturally produces but production drops by 60% by age 60. It's one of the most