GHK Cu: My secret weapon for skin, hair, and healing I use it two ways topical cream for my face, and subQ injections 3x a week. It boosts collagen, tightens skin, helps Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect GHK Cu as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications Systems Microbiology and Biomanufacturing Springer Nature Link Juvasonic + Vitali Copper Peptide (GHK Cu) Bundle