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For research and educational purposes only. Not intended for human consumption.

AHK-Cu

Well Researched
Updated Dec 2025

Hair Growth Copper Peptide | Dermal Papilla Stimulator

TopicalInjectable
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0.3-1% concentration
1-2x daily
Topical
Topical: Scalp
12-24 weeks
Typical duration
2-8°C
Refrigerated

Overview

What is AHK-Cu?

AHK-Cu (Copper Tripeptide-3) is a synthetic copper-binding tripeptide composed of Alanine-Histidine-Lysine complexed with a copper ion. While structurally similar to GHK-Cu (differing only in the first amino acid), AHK-Cu demonstrates targeted activity on dermal papilla cells and hair follicles. Research shows it stimulates hair follicle elongation, promotes dermal papilla cell proliferation, increases VEGF production, and inhibits TGF-β1.

Key Benefits

Stimulates hair follicle elongation, promotes dermal papilla cell proliferation, increases VEGF for improved scalp circulation, reduces TGF-β1 (counters DHT effects), supports collagen synthesis.

Mechanism of Action

AHK-Cu penetrates the scalp to deliver copper directly to dermal papilla cells and hair follicles. It activates proliferation pathways, elevates the Bcl-2/Bax ratio (anti-apoptotic), increases VEGF production for enhanced blood flow, and reduces TGF-β1 secretion.

Molecular Information

416.9 Da
Weight
3
amino acids
Copper tripeptide complex
Type
Amino Acid Sequence:
Ala-His-Lys
* Complexed with divalent copper ion (Cu²⁺). Synthetic analog of GHK-Cu with alanine replacing glycine.

Pharmacokinetics

Peak
Variable (topical)
Half-life
N/A (topical)
Cleared
N/A
100%50%0%0h6h12h18h24h
Peak
Half-life
Cleared
Topical application data

Research Indications

Hair Follicle Elongation

Ex vivo studies demonstrate stimulation of human hair follicle elongation at concentrations as low as 10⁻¹² M.

Dermal Papilla Cell Proliferation

Increases proliferation of key regulatory cells for hair follicle cycling.

VEGF Upregulation

Boosts vascular endothelial growth factor production for improved follicle nutrition.

Research Protocols

Disclaimer: AHK-Cu is primarily used topically. Injectable use has limited research. Best results require consistent use for 3-6+ months.

GoalDoseFrequencyRoute
Hair Growth - Scalp0.5-1% solution1-2x dailyTopical
Combined Protocol0.3-0.5% with minoxidil1-2x dailyTopical
Skin Regeneration0.3-1% serum1-2x dailyTopical

Timing: Evening application preferred to avoid UV exposure which can degrade the peptide.

Peptide Interactions

How to Reconstitute

Important: Always use bacteriostatic water (BAC). Sterile technique is essential.

1

Dissolve AHK-Cu powder in distilled water or formulation base

2

Verify pH is between 5.5-7.0

3

Add to cool-down phase of formulation (<40°C)

4

Mix gently until fully incorporated

5

Transfer to dark glass container

6

Store refrigerated at 2-8°C

7

Use within 30 days of preparation

Dosing Calculator

Calculate your injection volume with visual dosing guide

FINAL CONCENTRATION
2.50mg/mL
Each milliliter contains 2.50 mg of peptide
VISUAL REFERENCE (RESEARCH USE ONLY)

To obtain 250 mcg from this solution:

Draw 0.10 mL=10 units

(1 mL = 100 units on any insulin syringe)

0102030405060708090100
00.10.20.30.40.50.60.70.80.91.0
0.10 mL
10 units

Draw to this mark for 250 mcg

This calculator is for research purposes only. Always verify calculations and consult protocols.

Quality Indicators

Light blue powder

Characteristic color from the copper complex.

99%+ purity with COA

Certificate of analysis confirming identity and purity.

pH sensitive

Final product pH should be 5.5-7.0 for stability.

Discolored solution

Brown, green, or colorless indicates degradation.

What to Expect

  • Week 1-2: No visible changes; peptide working at cellular level
  • Week 2-4: Some report reduced hair shedding
  • Month 1-2: Fine vellus hairs may begin appearing
  • Month 2-3: New growth becoming visible; existing hairs may appear thicker
  • Month 4-6: Significant results visible with consistent use
  • Month 6-12: Full results achieved

Side Effects & Safety

Side Effects

  • Generally well-tolerated topically
  • Avoid with acidic products (AHAs, BHAs, Vitamin C) - use at different times
  • Do not combine with copper supplements
  • Keep pH between 5.5-7.0 for stability
  • Store properly - degrades with heat and light
  • Patch test if sensitive skin

When to Stop

  • Persistent irritation or redness
  • Allergic reaction signs
  • Skin infection develops
  • As directed by healthcare provider

References

2 Studies

Ionic Liquid Microemulsions for Topical Peptide Delivery (2023)

Formulation study | Enhanced delivery systems | Improved topical delivery and stability

Novel delivery system using ionic liquid microemulsions for enhanced copper tripeptide effects.

Human Skin Penetration of Copper Tripeptide

In vitro | Human skin samples | Layer-by-layer analysis

Demonstrated penetration through skin layers for therapeutic applications.

Quick Start Guide

Typical Dose
0.5-1% concentration
How Often
Once or twice daily
Where to Apply
Topical: scalp
Timing
Evening preferred to avoid UV exposure
Effects Timeline
Week 2-4: reduced shedding; Month 2-3: new growth visible; Month 4-6: significant improvement
Storage
Refrigerate 2-8°C, protect from light, use within 30 days
Cycle Length
12-24 weeks minimum for assessment
Break Between
Continuous use typically recommended

Research Disclaimer

AHK-Cu is sold for laboratory research purposes only and is not intended for human or animal consumption. The information provided on this page is compiled from published research, veterinary studies, and anecdotal reports for educational purposes. This content does not constitute medical advice, diagnosis, or treatment recommendations. Any research involving AHK-Cu must comply with all applicable local, state, and federal regulations. BioInfinity Lab makes no claims regarding the safety or efficacy of AHK-Cu for any purpose. Consult qualified professionals for any research applications.