GHK-Cu

A naturally occurring copper-binding tripeptide studied in skin-remodeling and collagen research.

GHK-Cu is unusual among the compounds in this library in that it occurs naturally in the body and was first identified in human plasma. Its distinctive feature is chemistry: the peptide binds a copper ion, which is central to why it has drawn research attention. This page is a neutral overview of the molecule as a research material and is not a description of use in people.

Classification and structure

GHK-Cu is a tripeptide — three amino acids, glycine, L-histidine, and L-lysine (hence "GHK") — complexed with a single copper(II) ion (the "Cu"). It is the copper-binding property that defines it: the histidine and other residues coordinate the metal, forming a stable copper-peptide complex. For research it is supplied as a lyophilized powder, typically with a characteristic blue tint from the bound copper.

Areas of research

In the published literature, GHK-Cu appears in research on:

• Skin-remodeling models — laboratory research into extracellular-matrix and dermal processes.
• Collagen research — studies examining collagen-related pathways in cell and tissue models.
• Copper transport — its role as a copper-binding molecule is itself a subject of biochemistry research.

Describing GHK-Cu as "studied in" these areas indicates where scientific work has been directed — it is not a claim that the compound produces any cosmetic or biological outcome in humans or animals.

Handling and verification

Copper-peptide complexes are generally kept cold and dry until reconstitution, following the researcher's own protocols. Every in-stock lot Vaelith ships carries a third-party certificate of analysis, and any lot can be confirmed by its number on the verification page.