GHK Cu Glow Peptide Stack for Skin Rejuvenation Jennifer R. Berman MD Copper Tripeptide 1 (GHK Cu): The Premier Anti Aging Ingredient for Skincare Formulators Titan Biotech Ltd. GHK Cu in the NAD+ Push Patch: A Smarter Way to Stimulate Collagen, He Hi, Finch GHK Cu Copper Peptide Collagen Boost & Skin Regeneration Calibrate Hydration Copper Tripeptide (GHK Cu) for Advanced Skincare & Haircare Formulatio GHK Cu (Copper Peptide) is a naturally occurring copper complex that decreases significantly as we age. This powerful peptide is known for its ability to upregulate the production of collagen and elastin, making