COPPER TRIPEPTIDE COMPLEX
In stock
GHK-Cu is a small, naturally occurring peptide bound to a copper ion — the blue tint you'll see in solution is the copper itself. It was first identified in human plasma decades ago and has been studied steadily ever since.
Most of the research around it sits in skin science: collagen production, the structure of the dermal matrix, and how repair-related genes switch on and off. A staple of cosmetic-science and tissue-model work.
Keep the sealed vials in the fridge and out of direct light — they’ll hold up for a long time that way. Once a vial is mixed, keep it refrigerated and use it within the window your protocol calls for.
Every batch we sell is tested by an independent U.S. lab before it goes up for sale — that report is the certificate of analysis, and a copy is included with every order. Want the one for your exact vial? Email the lot number printed on the label to [email protected] and we’ll send it over within one business day.
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Also referenced as: copper peptide GHK-Cu · GHK copper complex · glycyl-L-histidyl-L-lysine
GHK-Cu is a three-amino-acid peptide — glycine, histidine, lysine — bound to a copper(II) ion. It occurs naturally in human plasma, where it was first isolated in the 1970s; circulating levels are highest in youth and decline steadily with age, an observation that has driven interest in it ever since.
The copper is not a contaminant — it's the point. The peptide's histidine and the free amine chelate the ion into a stable complex, and that complex is the biologically studied form. It's also why a properly reconstituted vial has a distinct blue tint: you are literally looking at the copper.
The densest literature sits in skin science: collagen and glycosaminoglycan synthesis in fibroblast culture, remodelling of the dermal matrix, and wound-model studies going back decades. GHK-Cu is a fixture of cosmetic-science R&D for exactly this reason.
The more recent and arguably more interesting thread is gene expression. Profiling studies have reported that GHK exposure shifts the expression of a strikingly large number of genes, many associated with tissue remodelling and repair programs — which is why it now appears in studies well outside dermatology, from lung-tissue models to nerve-regeneration work.
Supplied as lyophilized powder in 50 mg and 100 mg vials at 98.4% verified purity. The blue color on reconstitution is expected; a colorless solution of a copper complex would be the red flag. As a small, robust tripeptide it tolerates handling better than long-chain peptides, but the same rules serve it: lyophilized at −20 °C, reconstituted at 2–8 °C.
It pairs naturally with our other recovery-line compounds — many published repair-model designs run a matrix-side arm (GHK-Cu) against a signalling-side arm (BPC-157 or TB-500).
The published record runs deeper than any product page should. For the primary literature, browse GHK-Cu studies on PubMed. For how every batch we sell is verified, see how we test.
From our research library: What “99% pure” actually means. · BPC-157 vs TB-500. · Storing and handling peptides properly.
No. GHK-Cu is supplied strictly for laboratory research. It is not for human or veterinary use, and every order requires agreement to our research-use policy.
Because of the copper. GHK-Cu is a peptide–copper(II) complex, and dissolved copper complexes are blue — the tint is direct visual confirmation that the ion is present and bound. A colorless GHK-Cu solution would suggest the copper is missing.
GHK is the bare tripeptide; GHK-Cu is that peptide complexed with a copper ion. The copper-bound form is what circulates in plasma and what most of the biological literature describes, so it's the form we supply.
The current batch is 98.4% pure by HPLC, tested by an independent US laboratory before sale — along with identity confirmation and endotoxin screening below 0.5 EU/mg. The certificate of analysis is included with every order, and the report for any specific vial is available by emailing its lot number.
GHK-Cu is available in 50mg and 100mg vials of lyophilized powder. Quantity discounts apply automatically at checkout.
Keep sealed vials frozen at −20 °C and away from light. Once reconstituted, hold the solution at 2–8 °C and use it within the window your laboratory protocol defines.
