Organic Copper Peptide Anti Aging Serum AHK Cu vs GHK Cu New Zealand: Benefits and Applications Advanced Insights into GHK Cu's Regenerative Mechanisms Molecular Catalyst for Collagen Production GHK Cu (5 mg) is a research grade tripeptide that modulates gene expression to accelerate collagen synthesis and mitigate inflammatory signaling. Explore its GHK Cu is a copper peptide that plays a role in tissue repair and collagen synthesis. The result: improved texture, firmness, and overall skin quality.