GHK Cu Copper Peptide Collagen Boost & Skin Regeneration Calibrate Hydration GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has ENHANCED EXTENDS PEPTIDE PLATFORM WITH TOPICAL GHK CU, FORMULATED UNDER MEDICAL COMMISSION OVERSIGHT Enhanced