Nanoengineered Self Assembling Peptides with Increased Proteolytic Stability Promote Wound Healing ACS Applied Materials & Interfaces GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu (copper peptide) is a science backed anti aging compound that supports collagen production, skin regeneration, and overall skin health. Used in both topical serums and subcutaneous GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration