The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect GHK Cu is a naturally occurring copper peptide that has gained attention for its wide range of potential regenerative and wellness benefits. It is commonly studied for its ability to support skin health Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin