Quantitation of Copper Tripeptide in Cosmetics via Fabric Phase Sorptive Extraction Combined with Zwitterionic Hydrophilic Interaction Liquid Chromatography and UV Vis Detection GHK Cu, the copper peptide, supports skin regeneration by signaling repair pathways and boosting collagen production. The result: stronger, healthier skin over time. #GHKCu #CopperPeptide #SkinRegeneration #RegenerativeAesthetics #Shookra Sublingual GHK Cu TruHealth Physical Therapy The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu is a naturally occurring tripeptide in human plasma. Levels average 200 ng ml at age 20 and drop to 80 ng ml by age 60 (Pickart et al., 2020). That decline tracks with