- ≥99% HPLC purity
- Lot-matched certificate of analysis
- Ships next business day, tracked
GHK-Cu Face Serum
Aqueous copper tripeptide-1 serum at 1% or 3% GHK-Cu in a 30 mL bottle
- FormClear blue aqueous serum in a 30 mL bottle
- Research areasFibroblast and ECM studies, copper-peptide chemistry, permeation and vehicle work
Supplied for laboratory research use only. Not for human or veterinary use, and not intended to diagnose, treat, cure or prevent any disease.
Overview
This serum is a lightweight aqueous preparation of GHK-Cu, the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine. GHK was identified in human plasma in the early 1970s as a fragment corresponding to a sequence in albumin, and its affinity for copper is what gives the complex its characteristic deep blue colour and much of its research interest. Plasma levels of GHK are reported to fall with age, which is one reason the peptide has been studied so heavily in skin and matrix biology.
Peptide inputs are third-party tested to ≥99% by HPLC with a lot-matched certificate of analysis. Prepared and shipped from the United States for laboratory research only.
Specifications
Supply & purity
- Form
- Clear blue aqueous serum in a 30 mL bottle
Additional detail
- Available strengths
- 30 mL · 1% GHK-Cu (10 mg/mL); 30 mL · 3% GHK-Cu (30 mg/mL)
- Active
- GHK-Cu, copper(II) complex of glycyl-L-histidyl-L-lysine
- INCI name of active
- Copper Tripeptide-1
- Peptide sequence
- Gly-His-Lys, coordinated to Cu(II)
- CAS number (active)
- 89030-95-5
- Molecular formula (active)
- C14H24N6O4·Cu
- Molecular weight (active)
- 403.93 g/mol
- Peptide purity input
- ≥99% by HPLC; lot-matched COA available
- Vehicle
- Aqueous, low-viscosity, no added fragrance or colourant
- Research areas
- Fibroblast and ECM studies, copper-peptide chemistry, permeation and vehicle work
- Storage
- 2–8 °C preferred, protected from light; keep the closure tight
- Compatibility note
- Strong reducing agents such as ascorbic acid can disturb copper coordination
Questions about GHK-Cu Face Serum
What is in this serum?
The active is GHK-Cu, the copper(II) complex of the tripeptide glycyl-histidyl-lysine, in a lightweight aqueous base with no added fragrance or colourant. It is offered at 1% (10 mg per mL) and 3% (30 mg per mL) in a 30 mL bottle, so the same vehicle can be used across concentrations.
Is the peptide in this formulation tested, and is a COA available?
Yes. The peptide input is released against a ≥99% HPLC purity specification with mass-spectrometric identity confirmation, and the lot-matched certificate of analysis is available on request. Each finished container is labelled with its own lot number so bench records can be tied back to the raw-material certificate.
Why is the serum blue?
The colour comes from copper(II) coordinated by the tripeptide. An intact GHK-Cu complex is deep blue, so colour is a quick qualitative indicator. Drift toward green, or fading, suggests the coordination has been disturbed by reducing agents, competing chelators or unfavourable pH.
How should the serum be stored?
Refrigeration at 2–8 °C with the closure tight and away from light is preferred. Avoid contaminating the bottle by dipping used applicators, and record the date the container was opened alongside its lot number so bench records stay traceable.
How does this compare with lyophilized GHK-Cu powder?
The powder lets a laboratory build its own vehicle and choose the exact concentration; the serum is a prepared aqueous formulation at two fixed strengths. Teams asking formulation or model questions usually take the serum, while those studying the complex itself normally start from powder.
What does research use only mean for a topical formulation?
This preparation is supplied as a laboratory research material for bench and model work such as ex vivo skin, reconstructed epidermis or stability testing. It is not a licensed cosmetic, drug or medical device, has not been reviewed by the FDA, and is not intended for human or veterinary application.
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