Repair and tissue research

AHK-Cu
research guide

AHK-Cu (L-alanyl-L-histidyl-L-lysine copper complex) is a copper-binding tripeptide directly studied in an ex vivo human hair follicle organ culture and in cultured human dermal papilla cells, where researchers reported stimulation of follicle elongation and reduced apoptotic signaling. This is a small, dated in vitro/ex vivo study rather than a living-patient clinical trial, and broader confirmatory human research on AHK-Cu specifically was not identified in the sources reviewed.

Limited direct evidenceEditorial review: September 13, 2026

Direct evidence does not establish a personal use protocol. Literature summary, not clinical peer review.

Looking for the product? Reign listings and business disclosure ↓

Jorge Abreu is not a doctor. This is an educational research summary, not a prescription or a personal dosing plan. Study results do not establish that a supplier product is safe or effective for people. Consult a licensed clinician about medical decisions.

01 · Start with identity

What is AHK-Cu?

AHK-Cu is a distinct tripeptide-copper complex, structurally related to but not identical to GHK-Cu. It is not an FDA approved drug. The primary study identified used ex vivo human hair follicle organ culture and in vitro dermal papilla cell culture, not living human subjects or an animal model.

Also searched as: Alanyl-histidyl-lysine copper tripeptide

02 · Read the evidence

What the studies reported

01

Ex vivo human hair follicle study

A study directly evaluating AHK-Cu (L-alanyl-L-histidyl-L-lysine-Cu2+) reported that it stimulated elongation of human hair follicles cultured ex vivo, using follicle organ culture rather than living human subjects [1].

02

Dermal papilla cell mechanism

The same study reported that AHK-Cu increased proliferation of cultured human dermal papilla cells and altered apoptosis-related markers, including the Bcl-2/Bax ratio and cleaved caspase-3, though the reduction in apoptotic cell counts was not statistically significant [1].

03

Hair loss peptide review context

A review overview of short peptides studied for hair loss references copper tripeptide complexes, including AHK-Cu, among candidates with proposed follicle-supportive mechanisms, situating the ex vivo finding within a broader preclinical literature [2].

03 · Numbers in context

What does dosing evidence actually support?

The identified ex vivo study applied AHK-Cu to isolated human hair follicles and cultured dermal papilla cells at concentrations of 10 to the negative 12 to 10 to the negative 9 molar, reported by the study authors for that laboratory model. This is an in vitro concentration range in isolated tissue and cells, not a validated dose for use in a living human, and no living-subject human trial for AHK-Cu was identified in the sources reviewed.

A study dose is not a personal dose. Population, route, formulation and supervision are part of the result. Online community schedules are not treated here as established clinical protocols.

04 · Safety and limits

What not to overlook

  • The main direct AHK-Cu study identified used ex vivo tissue and cell culture, not living human or animal subjects
  • No living-subject human or animal clinical trial specific to AHK-Cu was identified in the sources reviewed
  • Not an FDA approved drug
  • In vitro concentration ranges do not establish a dose for any administration route in a living person

05 · Product distinctions

Names are not interchangeable

Reign Peptide lists AHK-Cu as a lyophilized powder (100mg/vial, greater than or equal to 98% purity by third-party HPLC per the listing), described by the supplier as for in-vitro research use only. No independent study of this specific supplier formulation was identified in the sources reviewed.

06 · Handling and storage

Follow validated product instructions

A single water volume, refrigerator temperature or expiry window cannot be assumed for every compound and formulation. Use the exact manufacturer documentation and a validated laboratory procedure. If stability, solvent compatibility or microbiological quality is not documented, those properties remain unverified.

Refrigeration, clear appearance and bacteriostatic water do not make an unverified research product suitable for injection. This guide does not provide a mixing or administration procedure.

The existing concentration calculator checks arithmetic only. It cannot choose a safe dose or establish compatibility, sterility or shelf life.

Reign Peptide · Business disclosure

Research product listings

Jorge Abreu is involved in Reign Peptide. Links to Reign are a business connection, not an independent endorsement. Reign lists these products for laboratory research, not human consumption.

Use the listing to check the labeled identity, amount and available batch documentation. A purity result alone does not verify sterility, clinical suitability or equivalence to a medicine used in a trial.

Names and sizes are product labels, not dosing recommendations. Confirm current details with the seller.

Supplies and accessories

Compare the actual specifications

Jorge's supply directory includes syringes, alcohol pads, storage cases, travel refrigeration and electrolytes, with separate links for the two travel refrigeration options. Accessory availability is not a recommendation to administer a research compound.

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.

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Alcohol pads

MED PRIDE, 70% isopropyl, 200 count per listing. An alcohol pad does not establish sterility of a research product.

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Peptide fridge case

Listing: 63 slots for 3mL bottles, bag only. An organizer is not active refrigeration or a validated storage system.

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Peptide travel case

Medineed travel case with temperature display and two ice packs per listing. Check dimensions and transport requirements.

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Questions still worth asking

What remains unresolved?

  • Would the follicle elongation effect seen ex vivo replicate in a living-subject human trial with a topical or injectable AHK-Cu product?
  • Does AHK-Cu produce measurably different effects from GHK-Cu when compared directly in the same follicle model?

Check the source

References and evidence scope

  1. In vitro/ex vivo study · 2007The effect of tripeptide-copper complex on human hair growth in vitro ↗
  2. Review · 2026Overview of Short Peptides for Hair Loss ↗

These are the sources reviewed for this page, not an exhaustive systematic review. Related compound research is identified as such. Product links are not scientific references.

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