What is Matrixyl (palmitoyl pentapeptide-4)?

The short answer

Matrixyl is a peptide, a short chain of amino acids.

  • What it is

    Matrixyl (palmitoyl pentapeptide-4): Cosmetic signal peptide.

  • What people look into

    Skin and hair

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What it is

Also known as
palmitoyl pentapeptide, pal-kttks

Regulatory status

Cosmetic How we label status

As of October 4, 2026, Matrixyl (palmitoyl pentapeptide-4) is sold in the US as a cosmetic.

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Federal (FDA)
Cosmetic

References

Sources as of October 4, 2026

  1. FDA: www.fda.gov/cosmetics/cosmetics-laws-regulations/it-cosmetic-drug-or-both-or-it-soap