AHK-Cu vs Matrixyl

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

AHK-Cu

AHK-Cu (Copper Tripeptide-3, Alanine-Histidine-Lysine Copper) is a copper peptide similar to GHK-Cu but with different properties. It's used for hair growth and skin rejuvenation applications.

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Matrixyl

Matrixyl (Palmitoyl Pentapeptide-4) is a signal peptide that stimulates collagen and extracellular matrix production. It is one of the most well-studied anti-aging peptides with proven efficacy for wrinkle reduction.

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Side-by-Side Comparison

Aspect	AHK-Cu	Matrixyl
Dose Range	1 mg–10 mg	500 mcg–2 mg
Frequency	2x daily	2x daily
Cycle Length	4–8 weeks	4–12 weeks
Route	topical	topical
Mechanism	The copper-binding tripeptide stimulates collagen synthesis and may promote hair follicle enlargement. Works similarly to GHK-Cu but may have distinct receptor interactions.	Mimics collagen breakdown fragments, triggering fibroblasts to produce new collagen, elastin, and other matrix components. Essentially tricks skin into repair mode without actual damage.
Typical Dosage	Topical: 0.5-2% concentration in serums for skin or scalp applications. Often combined with other growth factors for hair formulations.	Topical: 2-8% concentration in serums and creams. Matrixyl 3000 combines it with Palmitoyl Tetrapeptide-7 for enhanced effects.
Administration	Topical application to skin or scalp. Can be used with microneedling for enhanced penetration. May cause temporary blue-green tint at high concentrations.	Topical application 1-2 times daily. Can be combined with other actives like retinol, vitamin C, and other peptides.
Side Effects	Generally well-tolerated. May cause skin irritation in sensitive individuals. Temporary discoloration possible.	Very well-tolerated. Rare mild irritation. Suitable for sensitive skin types.
Best For	Skin Health & Aesthetics	Anti-Aging & Longevity Skin Health & Aesthetics