Well Researched

AHK-Cu (Copper Tripeptide-3)

Hair Growth Copper Peptide | Dermal Papilla Stimulator

AHK-Cu (Copper Tripeptide-3) is a synthetic copper-binding tripeptide composed of Alanine-Histidine-Lysine complexed with a copper ion (Cu²⁺). While structurally similar to the naturally occurring GHK-Cu (differing only in the first amino acid - alanine vs glycine), 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 - making it particularly promising for hair growth applications. It also supports skin regeneration through fibroblast activation and collagen synthesis.

Daily dose

0.3-1%

Frequency

1-2x daily

Cycle length

12-24 weeks

Storage

2-8°C

Key benefits

Hair follicle stimulation, dermal papilla cell proliferation, VEGF increase, TGF-β1 reduction, anti-apoptotic effects, collagen synthesis, skin regeneration

How it works

Copper tripeptide complex that activates dermal papilla cells, increases VEGF, reduces TGF-β1, elevates Bcl-2/Bax ratio, and promotes SOD production for antioxidant protection.

Dosage protocols

Goal

Hair Growth

Dose

0.5-1% topical · 1-2x daily

Route

Scalp application

Goal

Skin Regeneration

Dose

0.3-1% topical · 1-2x daily

Route

Topical to skin

Research indications

hair

Hair Growth / Hair Loss — Primary research focus - stimulates hair follicle elongation and dermal papilla cell proliferation

skin Health

Skin Regeneration — Activates fibroblasts, promotes collagen synthesis, supports wound healing

anti Aging

Anti-Aging — Antioxidant and anti-apoptotic effects support skin health and cellular longevity

collagen

Collagen Synthesis — Promotes extracellular matrix production and collagen deposition for tissue renewal

Administration

topical

injectable

Interactions

Synergistic

GHK-Cu — Complementary copper peptides targeting different aspects of tissue regeneration. GHK-Cu excels at skin repair while AHK-Cu targets hair follicles. Can be combined in formulations

Synergistic

Minoxidil — Both promote hair growth via different mechanisms - minoxidil via potassium channel opening and vasodilation, AHK-Cu via dermal papilla stimulation and VEGF. Often combined in hair loss protocols

Complementary

Finasteride / Dutasteride — 5-alpha reductase inhibitors block DHT production while AHK-Cu may help counter DHT effects on follicles. Different mechanisms support combination approach

Avoid Combination

Copper Supplements — Risk of copper toxicity when combined with additional copper sources. Monitor total copper intake and avoid stacking copper peptides with oral copper supplements

Compatible

BPC-157 — Different tissue repair mechanisms - BPC-157 promotes systemic healing while AHK-Cu targets skin/hair. Safe to use in parallel for comprehensive regeneration support

Requires Timing

Vitamin C (L-Ascorbic Acid) — Low pH of ascorbic acid can destabilize copper peptides. Use at different times - Vitamin C in morning, AHK-Cu in evening - to avoid interaction

Use Caution

AHA/BHA Acids — Acidic exfoliants (glycolic, salicylic acid) can destabilize copper peptide complexes and reduce effectiveness. Use at different times or in separate routines

Use Caution

Retinol / Retinoids — Both are potent actives that can cause irritation. Retinoids also lower skin pH. Introduce slowly or use at different times to avoid sensitization

Monitor Combination

Iron Chelators — May interfere with copper binding and reduce peptide effectiveness. Monitor for reduced efficacy if using iron-chelating compounds

Synergistic

Hyaluronic Acid — Excellent combination - hyaluronic acid provides hydration and supports peptide penetration while AHK-Cu promotes follicle and skin health

Safety notes

Avoid acidic products (AHAs, Vitamin C) - use at different times

Do not combine with copper supplements

Maintain pH 5.5-7.0 for stability

Patch test if sensitive skin

Store properly - degrades with heat/light

Research studies

Ionic Liquid Microemulsions for Topical Peptide Delivery

Formulation study 2023 | Enhanced delivery systems | Copper peptide stability

Novel delivery system using thermodynamically stable ionic liquid microemulsions to improve topical delivery and stability of copper tripeptides including AHK-Cu for enhanced therapeutic effects.

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GHK-Cu Regenerative Actions - Gene Expression Data

Comprehensive review | 4000+ genes analyzed | Tissue repair mechanisms

While focused on GHK-Cu, this landmark review establishes the broader mechanisms of copper tripeptides in tissue regeneration, collagen synthesis, and anti-inflammatory pathways relevant to AHK-Cu.

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Human Skin Penetration of Copper Tripeptide In Vitro

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

Evaluated transdermal delivery of copper tripeptide, demonstrating penetration through skin layers with potential for topical therapeutic applications in skin regeneration and hair growth.

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Tripeptide-Copper Complex Effect on Human Hair Growth In Vitro

Ex vivo and in vitro study | Human hair follicles | Dermal papilla cells | Archives of Pharmacal Research 2007

Foundational study showing AHK-Cu (10⁻¹² to 10⁻⁹ M) stimulated human hair follicle elongation ex vivo and dermal papilla cell proliferation in vitro. Elevated Bcl-2/Bax ratio and reduced cleaved caspase-3/PARP levels indicate anti-apoptotic mechanism.

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Copper Tripeptide Effects on VEGF and TGF-β1

In vitro | Dermal fibroblasts | Growth factor analysis

Demonstrated that copper tripeptide complexes increase VEGF production while decreasing TGF-β1 secretion by dermal fibroblasts - key mechanisms for promoting angiogenesis and countering DHT effects on hair follicles.

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Related compounds

GHK-Cu Glow Protocol SNAP-8 Melanotan I