GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or If youre on a GLP 1 and starting to notice changes in your skin or hair youre not alone., Copper peptides (GHK Cu) are a simple way to support your body through the process , Boost collagen, Hair Growth Serum Intense with Copper Peptide GHK Cu Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect