Ordered Friday 3 PM, delivered Tuesday morning in Utrecht. Neatly packed and the COA simply arrived by email.
Sven K.
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The copper peptide that skin research has leaned on for decades.
4.9 · 211 reviewsBuy GHK-Cu as a research-grade copper peptide: ≥99% HPLC, dispatched the same working day from the Netherlands. This naturally occurring tripeptide (glycyl-histidyl-lysine with copper) has drawn research attention for decades around collagen and elastin. Not a finished serum, but raw material for laboratory research.
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Research into GHK-Cu centres on the skin. It is a copper peptide the body makes itself and whose levels fall away over the years, which is exactly why it turns up in studies on ageing. It is thought to have a hand in the production of collagen and elastin. That puts it among the most studied peptides in cosmetic science. At BasePurity you buy it as a research-grade material, not for use in humans.
It all turns on the copper ion. GHK-Cu binds it and so behaves as a kind of ferryman delivering copper to the cells, copper that enzymes around connective tissue need. Research holds that the peptide prompts the fibroblasts, the cells that produce collagen and elastin. The bulk of that knowledge comes from cell and skin research.
Plenty of substances pass as "peptides" while really being small molecules. GHK-Cu is not one of them: it is a genuine tripeptide, three amino acids (glycyl-histidyl-lysine) coupled to a copper ion. That copper is what gives a dissolved vial its blue-purple colour, a normal feature of the copper complex and not a contamination. Within peptide research, copper peptides form a branch of their own, with the skin as the main field of study.
Both are copper peptides, but research puts the emphasis differently. With GHK-Cu, glycine at the front, the subject is skin: collagen, elastin, connective tissue. With AHK-Cu, alanine at the front, the subject is the hair follicle. In research they sometimes appear side by side, the skin side and the hair side of the same family. You will find the hair variant separately in our cosmetic line; GHK-Cu is the skin and collagen part of that story.
GHK-Cu exists in two guises: worked into a serum or cream on the skincare shelf, and as a pure research-grade vial. We deliberately go for the second. A finished serum holds a low concentration of GHK-Cu topped up with fragrance, preservatives and the rest of the formulation; our vial holds the freeze-dried peptide itself, so you set your own concentration in the lab. Researchers would rather work from that pure starting point than from a finished cosmetic product.
With a copper complex, purity counts double, because the ratio between peptide and copper has to be right. Every batch therefore goes through HPLC analysis for ≥99% purity and identity, and we ship it freeze-dried so it reaches you stable. That way you know exactly what you are holding; the exact specifications, from purity to molecular weight and CAS, are in the table at the bottom of this page.
Verified buyers in the Netherlands, Belgium and Germany
Ordered Friday 3 PM, delivered Tuesday morning in Utrecht. Neatly packed and the COA simply arrived by email.
Sven K.
Verified purchase
Finally a supplier that just shows the HPLC + MS figures. Purity was exactly as promised.
Lotte v.d. B.
Verified purchase
Fast parcel out of the Netherlands. Emailed a question, got a reply within a few hours. Top service.
Paul M.
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Next business day in Rotterdam. Sturdily packed, vial arrived intact. Will definitely order again.
Marco R.
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Ordered around 3 PM, delivered Wednesday morning. The lot number on the vial matched the report I asked for.
Niels J.
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Within 24 hours from NL stock. COA with MS identity confirmation — hard to find anywhere else.
Jonas W.
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Delivery spot-on, COA detailed. Would appreciate a more extensive FAQ per peptide on the site.
Eva R.
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Ordered Tuesday before 4 PM, at my door Wednesday in Breda. Confirmation and dispatch email arrived neatly in sequence.
Bram H.
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Genuinely from NL stock, so here within a day. Vial well freeze-dried, everything tightly packed.
Femke S.
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Purity on the HPLC comfortably above 99%. Delivery a day later than hoped, nothing else to fault.
Thijs M.
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Ordered Friday 3 PM, delivered Tuesday morning in Utrecht. Neatly packed and the COA simply arrived by email.
Sven K.
Verified purchase
Finally a supplier that just shows the HPLC + MS figures. Purity was exactly as promised.
Lotte v.d. B.
Verified purchase
Fast parcel out of the Netherlands. Emailed a question, got a reply within a few hours. Top service.
Paul M.
Verified purchase
Next business day in Rotterdam. Sturdily packed, vial arrived intact. Will definitely order again.
Marco R.
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Ordered around 3 PM, delivered Wednesday morning. The lot number on the vial matched the report I asked for.
Niels J.
Verified purchase
Within 24 hours from NL stock. COA with MS identity confirmation — hard to find anywhere else.
Jonas W.
Verified purchase
Delivery spot-on, COA detailed. Would appreciate a more extensive FAQ per peptide on the site.
Eva R.
Verified purchase
Ordered Tuesday before 4 PM, at my door Wednesday in Breda. Confirmation and dispatch email arrived neatly in sequence.
Bram H.
Verified purchase
Genuinely from NL stock, so here within a day. Vial well freeze-dried, everything tightly packed.
Femke S.
Verified purchase
Purity on the HPLC comfortably above 99%. Delivery a day later than hoped, nothing else to fault.
Thijs M.
Verified purchase
The BPC + TB stack comes as two separate vials, each with its own COA. Not pre-mixed — exactly what I wanted.
Tom B.
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The COA was clear and readable. Delivered the next business day in The Hague. Helpful support by email.
Charlotte F.
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Emailed a question about storage temperature and got a concrete answer instead of a stock phrase. Saved me the digging.
Anouk d. V.
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Purity per COA 99.3%. Vial nicely freeze-dried, no yellow discolouration. Shipping from NL trouble-free.
Lukas K.
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Emailed a question on Saturday, Monday morning I got a reply from a real person. No cookie-cutter template. Real service.
Sara P.
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Shipped to Tilburg in one business day. Identity neatly confirmed by MS on the analysis report.
Daniel S.
Verified purchase
Second order. The first was problem-free, so no reason to look elsewhere. COA again with HPLC + MS figures.
Iris K.
Verified purchase
Messaged a question about storage, got a clear answer. Nice that there is simply someone reachable.
Joris V.
Verified purchase
Purity on the report matched what the page said. Delivered next day in Nijmegen. Exactly what I was after.
Sanne D.
Verified purchase
Shipped quickly from the Netherlands, and the COA confirmed the purity nicely. Third time ordering here without complaints.
Ruben T.
Verified purchase
The BPC + TB stack comes as two separate vials, each with its own COA. Not pre-mixed — exactly what I wanted.
Tom B.
Verified purchase
The COA was clear and readable. Delivered the next business day in The Hague. Helpful support by email.
Charlotte F.
Verified purchase
Emailed a question about storage temperature and got a concrete answer instead of a stock phrase. Saved me the digging.
Anouk d. V.
Verified purchase
Purity per COA 99.3%. Vial nicely freeze-dried, no yellow discolouration. Shipping from NL trouble-free.
Lukas K.
Verified purchase
Emailed a question on Saturday, Monday morning I got a reply from a real person. No cookie-cutter template. Real service.
Sara P.
Verified purchase
Shipped to Tilburg in one business day. Identity neatly confirmed by MS on the analysis report.
Daniel S.
Verified purchase
Second order. The first was problem-free, so no reason to look elsewhere. COA again with HPLC + MS figures.
Iris K.
Verified purchase
Messaged a question about storage, got a clear answer. Nice that there is simply someone reachable.
Joris V.
Verified purchase
Purity on the report matched what the page said. Delivered next day in Nijmegen. Exactly what I was after.
Sanne D.
Verified purchase
Shipped quickly from the Netherlands, and the COA confirmed the purity nicely. Third time ordering here without complaints.
Ruben T.
Verified purchase