GHK-Cu: Copper, Skin Architecture, and the Language of Repair
GHK-Cu is more than a cosmetic peptide. As a copper-bound tripeptide, it sits at the intersection of skin structure, extracellular matrix remodeling, fibroblast activity, and repair-associated signaling. This guide explores GHK-Cu through the lens of copper biology, dermal architecture, collagen and elastin pathways, and the deeper language of tissue maintenance.