- Peptide purity input: ≥99% by HPLC
- 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
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
Units and conversions
This is a pre-mixed presentation: the strength is fixed at fill, and the only arithmetic between the label and the bench is a change of units. The peptide unit converter moves between mg, mcg, mL and µL without the decimal-point slip that costs a whole run.
Certificate of analysis
Every lot of GHK-Cu Face Serum is released against a certificate of analysis: the batch-specific laboratory data for that lot, not a generic document for the compound. The lot number on the certificate matches the lot number printed on the label you receive — the vial label itself, where the product is vialled — so the record and the material it describes can always be reconciled.
Peptide purity input: ≥99% by HPLC — the specification for this listing. The figure for the lot you receive is the one reported on that lot’s certificate.
No lot certificate is on display on this page at the moment. That is a publishing state and not a testing one: lots are released and documented as described above whether or not the document is posted here, and we will send what exists for the lot in stock, or for a lot already on your bench, by its number.
Certificates are available on request before you order as well as after, with no account and no charge. Request the certificate for this listing, read the testing and documentation policy in full, or see how to read a peptide COA.
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.
Related
