Ordered Friday 3 PM, delivered Tuesday morning in Utrecht. Neatly packed and the COA simply arrived by email.
Sven K.
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AHK-Cu
Copper tripeptide, alanyl-histidyl-lysine.
4.5 · 23 reviews≥ 99.4% HPLCLab-verifiedCosmetic researchResearch only
Buy AHK-Cu, copper tripeptide-3, ≥99% HPLC, same-day from the Netherlands. Synthetic copper complex, studied in cosmetic research around the hair follicle. Research only.
€ 34,95
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Ships from NL · 1–2 day EU delivery
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AHK-Cu (copper tripeptide-3) is a synthetic copper-binding tripeptide made of alanine, histidine and lysine, complexed with copper (Cu²⁺). It is the hair-focused counterpart to the better-known GHK-Cu: where GHK-Cu mainly appears in skin research, AHK-Cu is studied in cosmetic research mainly around the hair follicle. At GradePurity you buy AHK-Cu as a research-grade peptide: ≥99% HPLC purity and same-day shipping from the Netherlands.
What is AHK-Cu?
AHK-Cu, also known as copper tripeptide-3, is a synthetic peptide made of three amino acids, alanine, histidine and lysine, that together hold a copper ion. The name comes from those three amino acids (A-H-K) plus the copper (Cu). In cosmetic research it is mainly in view around the hair follicle and the scalp. It is closely related to GHK-Cu, but with a different focus.
How does AHK-Cu work?
AHK-Cu is a copper complex: the peptide binds a copper ion and delivers it in a targeted way. Copper plays a role in many processes around connective tissue and blood vessels. In research around the hair follicle, it is thought that AHK-Cu signals the cells of the hair papilla, the dermal papilla cells that play a key role in the hair growth cycle. Most of what is known about this comes from preclinical lab work, not from large studies in humans.
AHK-Cu vs. GHK-Cu, the difference
AHK-Cu and GHK-Cu are often mentioned together, because both are tripeptide copper complexes. The difference is one amino acid: GHK-Cu starts with glycine, AHK-Cu with alanine. That small difference shifts the focus in research, GHK-Cu is mainly known around skin regeneration and collagen, AHK-Cu around the hair follicle. In formulations they are sometimes combined to study both routes at once. If you want to compare GHK-Cu in research, you will find it separately in our range. GradePurity supplies single vials, no pre-mixed combination.
AHK-Cu and hair research
AHK-Cu is often mentioned online in the context of hair growth, but it is important to be honest about the data. Most of it comes from early, preclinical research, including a much-cited lab study from 2007, and from theory about the copper route in the follicle. Broad, well-designed studies in humans are scarce. AHK-Cu is therefore not a proven treatment for hair loss; the substances for which that is established (such as minoxidil and finasteride) work in a different way. GradePurity supplies AHK-Cu solely as a research substance and makes no hair-growth or treatment claims.
AHK-Cu in cosmetic formulations
On the market you mostly encounter AHK-Cu as an ingredient in scalp serums and tonics, often together with GHK-Cu, and as raw powder for do-it-yourself (DIY) formulations. Important: at GradePurity you do not buy a finished serum, but the lyophilised research-grade vial that you mix yourself for laboratory research. The specifications you need for your formulation or documentation, purity, vial size, sequence, are in the table at the bottom of this page.
Reconstituting and storing AHK-Cu
AHK-Cu is supplied as a lyophilised powder in a vial. For research it is mixed with distilled water or a buffer; GradePurity gives no dosing or administration advice, because we supply it solely as a research peptide. A reconstituted AHK-Cu vial has a characteristic blue colour, this comes from the copper complex and is normal, not a sign of contamination. Store the unopened vial dry, dark and cool (for longer storage the dry vial can go in the freezer); after mixing, the solution goes in the fridge (2–8 °C), protected from light, and not in the freezer. The details on this page are intended for research documentation.
Purity and lab testing
Every batch of AHK-Cu is checked in the lab for purity (≥99% HPLC) and identity. So you know exactly what you are holding, that is the main difference from anonymous suppliers. A certificate of analysis (COA) is available per lot. The exact specifications are in the table at the bottom of this page.
Frequently asked questions
What our customers say.
Verified buyers across the Netherlands
★★★★★4.9 / 5Verified
BPC-157
Finally a supplier that just shows the HPLC + MS figures. Purity was exactly as promised.
Lotte v.d. B.
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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. Well and discreetly packed, will definitely order again.
Marco R.
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Ordered around 3 PM, delivered Wednesday morning. Unbranded envelope, my courier had no idea what was inside.
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. Payment went flawlessly.
Bram H.
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Genuinely from NL stock, so no customs hassle. 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. Well and discreetly packed, will definitely order again.
Marco R.
Verified purchase
Ordered around 3 PM, delivered Wednesday morning. Unbranded envelope, my courier had no idea what was inside.
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. Payment went flawlessly.
Bram H.
Verified purchase
Genuinely from NL stock, so no customs hassle. 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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Arrived in a plain, neutral envelope. My neighbour who took it in literally had no clue what was inside. Privacy = 10.
Anouk d. V.
Verified purchase
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. Payment trouble-free. Identity neatly confirmed by MS on the COA.
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.
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Completely neutral packaging, nothing visible on the outside. 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
Arrived in a plain, neutral envelope. My neighbour who took it in literally had no clue what was inside. Privacy = 10.
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. Payment trouble-free. Identity neatly confirmed by MS on the COA.
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
Completely neutral packaging, nothing visible on the outside. 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
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