AHK-Cu (Copper Tripeptide-3)

Hair Growth Copper Peptide · Dermal Papilla Stimulator

Overview

Synthetic copper-binding tripeptide targeting dermal papilla cells and hair follicles. Stimulates hair follicle elongation, promotes cell proliferation, increases VEGF production, and inhibits TGF-β1. Supports skin regeneration through fibroblast activation and collagen synthesis.

AHK-Cu penetrates scalp delivering copper directly to dermal papilla cells. Activates proliferation pathways, elevates Bcl-2/Bax ratio (anti-apoptotic), increases VEGF for blood flow, reduces TGF-β1, and promotes SOD production for oxidative stress reduction.

Ex vivo studies demonstrate AHK-Cu stimulates human hair follicle elongation at concentrations as low as 10⁻¹² M, promoting longer anagen phase.

Increases proliferation of dermal papilla cells, the key regulatory cells for hair follicle cycling and hair growth.

Boosts vascular endothelial growth factor production, improving blood flow and nutrient delivery to hair follicles.

Reduces TGF-β1 secretion and oxidative stress (via SOD), both contributing to DHT-induced follicle miniaturization.

Mechanism

Ex vivo studies demonstrate AHK-Cu stimulates human hair follicle elongation at concentrations as low as 10⁻¹² M, promoting longer anagen phase.

Research areas

Synthetic copper-binding tripeptide targeting dermal papilla cells and hair follicles. Stimulates hair follicle elongation, promotes cell proliferation, increases VEGF production, and inhibits TGF-β1. Supports skin regeneration through fibroblast activation and collagen synthesis.
AHK-Cu penetrates scalp delivering copper directly to dermal papilla cells. Activates proliferation pathways, elevates Bcl-2/Bax ratio (anti-apoptotic), increases VEGF for blood flow, reduces TGF-β1, and promotes SOD production for oxidative stress reduction.
Ex vivo studies demonstrate AHK-Cu stimulates human hair follicle elongation at concentrations as low as 10⁻¹² M, promoting longer anagen phase.
Increases proliferation of dermal papilla cells, the key regulatory cells for hair follicle cycling and hair growth.
Boosts vascular endothelial growth factor production, improving blood flow and nutrient delivery to hair follicles.
Reduces TGF-β1 secretion and oxidative stress (via SOD), both contributing to DHT-induced follicle miniaturization.
Activates fibroblast proliferation and collagen synthesis for improved skin structure and wound healing.
Elevates Bcl-2/Bax ratio and reduces caspase-3 activation, protecting cells from programmed death.
Promotes collagen and ECM component deposition for tissue renewal and repair.
Most users see no visible changes weeks 1-2 as the peptide works at cellular level. Fine vellus hairs may appear in thinning areas by month 1-2. Noticeable improvements in hair density and quality emerge by month 3-4 with continued use. Full results with significant regrowth typically appear by 6-12 months.

Research notes

Generally well-tolerated with excellent safety profile in topical applications
Rare scalp irritation (patch test recommended)
Potential for mild redness on sensitive skin
Persistent scalp irritation, itching, or burning
Allergic reaction: rash, hives, swelling
Increased hair shedding that doesn't improve after 4-6 weeks
Signs of copper sensitivity: metallic taste, nausea
Skin discoloration at application site
Any unexpected adverse reactions
Not for use on broken or infected skin
Avoid eye area - may cause irritation
Do not use if allergic to copper or peptides
Not recommended during acute skin infections
They work through different mechanisms: minoxidil opens potassium channels and vasodilates, while AHK-Cu stimulates dermal papilla cells and VEGF. Clinical studies show AHK-Cu alone produces positive results, and combining them is synergistic since they target different pathways. Neither is universally superior; combination likely produces best results.

References

FAQs

Can I use AHK-Cu with vitamin C or other actives in my skincare routine?

No. Low pH ascorbic acid destabilizes the copper peptide complex. Use vitamin C at different times (morning vs evening). Similarly, acidic AHA/BHA exfoliants can destabilize AHK-Cu, as can retinol/retinoids which are potent actives that may cause irritation. Space these products by several hours.

Can I take copper supplements while using AHK-Cu topically?

No. AHK-Cu is complexed copper delivered topically, and additional copper supplementation creates toxicity risk. Monitor total copper intake from all sources including multivitamins. Topical application has minimal systemic absorption, but combining with oral copper supplementation is unnecessary and potentially dangerous.