GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) is a small tripeptide that binds copper. It occurs naturally in human plasma and declines with age. In research it's studied for extracellular-matrix (ECM) remodeling — signaling for collagen and elastin — which is why it appears constantly in skin and hair contexts.
GHK-Cu is a core ingredient in the GLOW blend (BPC-157 + TB-500 + GHK-Cu) and KLOW (adds KPV). Because copper-peptide ECM remodeling is a different mechanism from BPC-157's angiogenesis and TB-500's cell migration, the combination is genuinely synergistic — see the stacking guide. It also pairs cleanly with BPC-157 + TB-500.
GHK-Cu appears both in topical cosmetic formulas and as a lyophilized research powder for reconstitution. For the research form, see how to reconstitute peptides.
GHK-Cu is often sold in larger vials (50–100 mg), so cost-per-mg varies widely. PepsTracker compares it across all 26 vendors with discount codes applied. Vendors like Platinum Peptides carry GHK-Cu and the GLOW/KLOW blends, 15% off with pepstracker15. Search "GHK-Cu" on the homepage for live pricing.
GHK-Cu is a copper tripeptide studied for skin (collagen/elastin signaling), hair, and tissue repair through extracellular-matrix remodeling. It is sold for research use only.
Yes — that combination is the GLOW blend. GHK-Cu's ECM remodeling complements BPC-157's angiogenesis and TB-500's cell migration, making it a synergistic healing stack.
Because vial sizes vary (often 50–100 mg), compare on cost-per-milligram. PepsTracker normalizes GHK-Cu prices across 26 vendors with discount codes applied.