Cosmetic & Skin
GHK-CU 50mg
50MG · lyophilized
Order & shipping details
Quantity breaks: 5 = −10% · 10 = −15%. Bulk pricing at qty ≥ 10.
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- Discreet packaging — nothing on the outside
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View certificate of analysis →
On the record
This Lot's Certificate of Analysis
The certificate below is the one issued for the lot printed on the vial. Read it in full, or look it up at the lab that ran it.
GHK-CU 50mg
Lot VR108082500001-50 · HPLC purity >99.8% · Vanguard Laboratory · report V260407-4 002 · reported 20 Apr 2026
What this is
A naturally occurring copper-binding tripeptide, glycyl-L-histidyl-L-lysine, complexed with copper.
Three amino acids — glycine, histidine, lysine — and a copper ion. That is the entire molecule. It is the shortest peptide in this catalog by a wide margin, and one of the very few that occurs naturally in human plasma rather than being designed in a lab.
The copper is not an additive or a stabiliser; it is structural. GHK binds copper(II) with high affinity, and the complexed form is what the research literature almost always means when it writes "GHK-Cu". That is also why the material has its characteristic deep blue colour — copper coordination, visible to the eye. If a GHK-Cu preparation is not blue, something is wrong with it.
At 50mg this is the largest single-compound fill in our catalog, which reflects how it is typically used in research: at higher masses than most peptides, in preparations rather than as a trace input.
Research profile
Studied widely in skin and tissue-repair research as a model for copper-peptide signaling and collagen-related, wound-healing pathways.
"Widely" is doing honest work in that sentence. Copper-peptide research is old by peptide standards — GHK was first isolated in the 1970s — so the literature is unusually deep and unusually varied in quality. There is a large body of genuine in-vitro work, and there is also a large body of cosmetic-industry material that is not research in any rigorous sense. Read the sourcing.
Most of the serious published work frames GHK-Cu as a probe for copper-dependent signalling: what happens to matrix-related gene expression and cellular behaviour when copper is delivered in a peptide-bound form rather than as a free ion. Research suggests the bound form behaves differently from free copper, which is the observation the whole field is built on.
It is also the reason GHK-Cu ends up in blends. Our GLOW 70mg and KLOW 80mg both pair it with tissue-repair peptides.
Specifications
| Property | This lot |
|---|---|
| Compound | GHK-Cu (glycyl-L-histidyl-L-lysine, copper complex) |
| CAS | 89030-95-5 |
| Sequence length | 3 amino acids |
| Labelled mass | 50mg |
| Certified quantity (this lot) | 55.84 mg |
| Chromatographic purity | ≥99.8 Area%, HPLC-UV/VIS |
| Endotoxin | <5.00 EU/mg (LAL) |
| Physical form | Lyophilized powder (blue) |
| Storage (unopened) | −20°C |
| Reconstitution | Bacteriostatic water — see the reference calculator on this page |
| Lot | VR108082500001-50 |
| Laboratory ID | V260407-4 002 |
| Report date | 2026-04-20 |
Lab testing and this lot's certificate
Lot VR108082500001-50 was tested by Vanguard Laboratory, independent and A2LA-accredited (A2LA certificate #6377.01.01), and reported on 20 April 2026. The certificate is published — open it from this page.
- Chromatographic purity: ≥99.8 Area% by HPLC-UV/VIS.
- Quantity: 55.84mg against a 50mg label. Overfill, which passes our threshold — we fail only below 90% of label.
- Endotoxin: <5.00 EU/mg by LAL.
Reported by Dustin Newman, Laboratory Director; approved by Tori Johnson, Operations Manager.
Note that this lot carries its own report date, separate from the batch of certificates issued on 16 April. Every certificate on this site is tied to one lot and one date — we do not roll a date forward across lots.
Handling and storage
Lyophilized. Reconstitute with bacteriostatic water; store at minus 20C.
Sealed powder at −20°C, protected from light. Because the copper complex is what gives the material its colour, colour change in a reconstituted preparation is a useful visual signal that something has shifted — worth noting in your handling records.
The reconstitution reference on this page converts diluent volume into concentration. It is a reference for in-vitro laboratory handling only. Its outputs describe the physical properties of the reconstituted vial — concentration and mass drawn — and are not dosing guidance, administration instructions, or medical advice.
Bacteriostatic water sold separately.
Questions
Why is the powder blue?
Copper coordination. GHK binds copper(II), and the resulting complex is deep blue. The colour is a property of the intact complex.
Is the copper an additive?
No — it is part of the molecule as researchers use it. "GHK-Cu" means the copper-complexed form, which is what essentially all of the published copper-peptide literature is about.
Why is this vial 50mg when most peptides here are 5-10mg?
Because GHK-Cu is typically worked with at higher masses. The 50mg fill matches how the compound is actually used rather than matching the rest of the catalog for tidiness.
What is the difference between buying this and buying the GLOW blend?
GLOW 70mg contains GHK-Cu plus BPC-157 and TB-500 in one vial, at roughly 51.65mg of GHK-Cu on the current lot. This page is the copper tripeptide on its own, with independent control of the mass.
Does the certificate cover my exact vial?
It covers lot VR108082500001-50. Match the lot on your vial to the lot on the certificate, or look yours up on the lab tests page.
Research Use Only. This product is sold for in-vitro research use only. It is not a drug, not a supplement, and not for human or veterinary use. Hello Stacks makes no claims regarding the safety, efficacy or suitability of any compound for any use, and publishes no dosing guidance.