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 Travel Friendly Skincare Routine: Sumanurica Mini Set TikTok One of the questions we often receive about our products is: Why is the GHK Cu Repairing Serum stored in two part packaging? GHK Cu is an unstable ingredient that can slowly lose its effectiveness SumaNurica Rapid Recovery Duo Kit MYER Normal Physiology of Growth Hormone in Normal Adults Endotext NCBI Bookshelf