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AHK-Cu: Skin / Cosmetic research guide

In short: AHK-Cu is a copper-binding tripeptide (Ala-His-Lys) from the same copper-peptide family as GHK-Cu, studied principally in hair-follicle and dermal-papilla models for VEGF signalling and follicular elongation. It is studied in preclinical (cell and animal) research and is supplied strictly for laboratory use, not for human or clinical use.

Not medical advice. AHK-Cu is a research compound. This guide does not provide dosing, diagnosis, therapy recommendations, or claims about effects in humans.

AHK-Cu at a glance

Compound type

Research peptide

Research category

Skin / Cosmetic

Also known as

AHK-Cu, alanyl-histidyl-lysine copper, Ala-His-Lys copper complex, AHK copper peptide, tripeptide-3 copper

Molecular weight

354.40 Da (free tripeptide); ~418 Da as the copper(II) complex

Research-grade purity

>98% HPLC

Evidence context

Preclinical / research use only

Regulatory status

Not an approved medicine. Supplied as a research compound

Last reviewed

6 August 2026

What to know first

Copper-binding tripeptide (Ala-His-Lys) from the same signalling-peptide family as GHK-Cu

Central histidine imidazole anchors the copper(II) ion, the structural basis of the complex

Studied in cultured dermal papilla cells — the follicular population that governs hair growth

Reported to raise VEGF expression in those models, the angiogenic link in copper-peptide research

Details and limits sit in the sections below. Research use only.

What AHK-Cu is

AHK-Cu is the copper(II) complex of alanyl-histidyl-lysine, a copper-binding tripeptide studied chiefly in dermal-papilla and hair-follicle models.

One-paragraph overview from our research datasheet. Still scientific, but faster to read than the full mechanism list below.

AHK-Cu is a copper-binding tripeptide (Ala-His-Lys) from the same copper-peptide family as GHK-Cu, studied principally in hair-follicle and dermal-papilla models for VEGF signalling and follicular elongation.

Research contexts

Peer-reviewed papers discuss AHK-Cu in specific lab settings. The points below reflect research questions, not health claims.

Research vs. personal use: Literature describes experiments in cells and animals. That is distinct from real-world use. Our products are for laboratory research only.

Typical study contexts

Fibroblast cultures and ex-vivo skin models looking at matrix proteins.

Dermatology research framed as lab endpoints, not consumer guarantees.

Copper-binding tripeptide (Ala-His-Lys) from the same signalling-peptide family as GHK-Cu.

Central histidine imidazole anchors the copper(II) ion, the structural basis of the complex.

Studied in cultured dermal papilla cells — the follicular population that governs hair growth.

Reported to raise VEGF expression in those models, the angiogenic link in copper-peptide research.

Why Skin / Cosmetic research matters

This group appears in skin and matrix research. Papers look at collagen-related pathways and how cells respond after stress. Lab endpoints only.

Mechanisms (technical review)

Our datasheet lists mechanistic themes from preclinical work. These are research endpoints, not health claims.

Copper-binding tripeptide (Ala-His-Lys) from the same signalling-peptide family as GHK-Cu

Central histidine imidazole anchors the copper(II) ion, the structural basis of the complex

Studied in cultured dermal papilla cells — the follicular population that governs hair growth

Reported to raise VEGF expression in those models, the angiogenic link in copper-peptide research

Examined for follicular elongation in hair-follicle organ culture

Delivers copper, a required cofactor for lysyl oxidase and superoxide dismutase

Lab handling & preparation

Storage: Lyophilised powder: store in freezer (−20 °C), protected from light and moisture. Reconstituted: refrigerate 1–6 °C and use promptly — the copper complex is sensitive to pH shifts and to chelating agents, so avoid EDTA-containing buffers. Use within the validated stability window for the specific batch.. See the storage guide.

Research dosing context: Literature typically discusses Topical and intradermal preparations in published research protocols; concentrations rather than fixed masses are the usual reported unit. Study-dependent — the published work is in-vitro and ex-vivo rather than scheduled in-vivo dosing The AHK-Cu literature is dominated by cell-culture and follicle organ-culture experiments, which report micromolar concentrations in medium rather than administered amounts, so there is no published in-vivo schedule to describe. Copper peptides are typically prepared fresh because the copper complex is sensitive to pH and to chelating agents in the buffer. This text describes the state of the literature and is not a dosing recommendation. Material is for laboratory research only.

Preparation: Follow the reconstitution guide. Confirm volumes with the calculator.

Purity check: Use the COA reading guide and the published AHK-Cu Certificate of Analysis.

Common Questions People Are Asking

What is AHK-Cu used for in research?

It is studied mainly in hair-follicle biology — cultured dermal papilla cells and hair-follicle organ culture — with cell viability and VEGF expression as the usual endpoints. More broadly it serves as a structural comparator to GHK-Cu in copper-peptide structure-activity work. It is supplied here for laboratory research only and is not for human use.

How is AHK-Cu different from GHK-Cu?

They differ by one residue: AHK-Cu has alanine where GHK-Cu has glycine at the N-terminus. Both bind copper(II) through a central histidine, so the coordination chemistry is essentially the same. The practical difference is the literature — GHK-Cu is studied extensively for collagen synthesis and skin remodelling, while AHK-Cu appears mostly in hair-follicle work, and GHK-Cu’s evidence base is far larger.

Why does the copper matter?

Copper is the active part of the story. It is a required cofactor for lysyl oxidase, which cross-links collagen and elastin, and for Cu/Zn superoxide dismutase, an antioxidant enzyme, and it has long been associated with angiogenic signalling. The peptide’s role is to bind the ion tightly enough to transport it safely but loosely enough to hand it off to cells.

Is there human clinical data for AHK-Cu?

No controlled human trial of AHK-Cu is cited on this page. The available studies are in-vitro and ex-vivo, and a meaningful share come from cosmetic-industry research rather than independent academic groups. Treat the compound as early-stage and do not import GHK-Cu’s evidence base onto it.

How should AHK-Cu be handled and stored?

Keep the lyophilised powder frozen at −20 °C, protected from light and moisture. Reconstitute in bacteriostatic or sterile water and refrigerate at 1–6 °C. Avoid buffers containing EDTA or other chelators, which strip the copper from the peptide, and be aware that large pH shifts destabilise the complex — many protocols prepare it fresh for this reason.

Is this page medical advice? Can I use AHK-Cu for my health?

No, and no. This article is educational only. We do not provide dosing, medical recommendations, or health claims. Our products are sold strictly for laboratory research, not for personal use of any kind.

Where do I find AHK-Cu specs, purity certificates and pricing?

Open the shop listing via “View product details.” There you will see batch specs, the Certificate of Analysis (COA), concentration, purity grade, and available SKUs with current pricing.

Related peptide guides

Other compounds researchers often read about alongside AHK-Cu.

GHK-Cu - companion guide

BPC-157 - companion guide

SNAP-8 - companion guide

TB-500 - companion guide

Scientific sources & further reading

Primary literature and registries for AHK-Cu, plus mainstream coverage of the peptide category. Research use only - not medical advice.

Databases & literature:

PubMed: peer-reviewed literature on AHK-Cu

ClinicalTrials.gov: registered studies on AHK-Cu

AHK-Cu: Wikipedia (search)

Peptides in the news:

WebMD: consumer health reference

BBC News: Health

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Sky News: “Inside the exploding US peptides craze” (video)

Sky News Australia: “Black market peptide trade explodes as influencers fuel uptick in use”

Sky News Australia: “Backyard peptide boom sparks alarm” (video)

Sky News Australia: “Oprah reveals struggle with shame of weight-loss drugs”

Ready to order? View full product specs

Access concentration, batch info, variants, and current pricing on our shop.

Also known as: AHK-Cu, alanyl-histidyl-lysine copper, Ala-His-Lys copper complex, AHK copper peptide, tripeptide-3 copper

PRECISION. PURITY. PERFORMANCE.

Research peptides at >99% HPLC-verified purity, third-party tested by Janoshik Analytical & Freedom Diagnostics, with Certificates of Analysis published per released batch. Supplied strictly for laboratory research use.

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Research use only — not for human consumption. All products are supplied strictly for laboratory research purposes.