GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference GHK Cu Peptide: Benefits for Tissue Repair, Healing, and Recovery Revolution Health & Wellness Copper Tripeptide 10x (GHK Cu, Copper Tripeptide 1) (10000ppm Solution) PeerJ Potential role of ghrelin in neuroprotection and cognitive function: implications for diabetic cognitive impairment