Side-by-Side Comparison · 2026

AHK-Cu vs Matrixyl

AHK-Cu vs Matrixyl — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

AHK-Cu
Skin & Cosmetic

AHK-Cu is a copper-chelating tripeptide (Ala-His-Lys) that functions as a hair follicle stimulant and skin regeneration signal. Related to the more widely studied GHK-Cu, AHK-Cu has shown specific activity in promoting hair follicle stem cell proliferation and inhibiting DHT-rela...

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Matrixyl
Skin & Cosmetic

Matrixyl is the trade name for Palmitoyl Pentapeptide-4 (Pal-KTTKS), developed by Sederma (now Croda). It is derived from a procollagen type I C-terminal propeptide fragment and uses palmitoylation to cross the skin lipid barrier and reach dermal fibroblasts....

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Key Parameters
Parameter AHK-Cu Matrixyl
Category Skin & Cosmetic Skin & Cosmetic
Research Research Use Widely Used (Cosmetic)
Half-Life - -
Typical Dose 2–5% solution 3–5% in formulation
Frequency Once or twice daily Twice daily
Route Topical Topical
FDA Status Not Approved (Cosmetic) Not Approved (Cosmetic)

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Frequently Asked Questions
What is the difference between AHK-Cu and Matrixyl?
AHK-Cu: AHK-Cu is a copper-chelating tripeptide (Ala-His-Lys) that functions as a hair follicle stimulant and skin regeneration signal. Related to the more widely studied GHK-Cu, AHK-Cu has shown specific act... Matrixyl: Matrixyl is the trade name for Palmitoyl Pentapeptide-4 (Pal-KTTKS), developed by Sederma (now Croda). It is derived from a procollagen type I C-terminal propeptide fragment and uses palmitoylation to...
Which has a longer half-life, AHK-Cu or Matrixyl?
AHK-Cu half-life: unknown. Matrixyl half-life: unknown.
Can you stack AHK-Cu and Matrixyl?
AHK-Cu and Matrixyl are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.