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Cosmetic peptide

Matrixyl

Matrixyl typically refers to palmitoyl pentapeptide-4 (Pal-KTTKS), a signal peptide widely used in cosmetic science and skincare formulations.

By The Peptides Codex Editorial TeamReviewed July 10, 2026
Length
5 aa
Class
Cosmetic peptide
Function
Signal peptide used in skincare formulations
Context
Cosmetic ingredient

Mainstream cosmetic peptide — huge adjacent search volume.

Also known as: palmitoyl pentapeptide-4 · Pal-KTTKS

Part of the Cosmetic & skin peptides cluster

Overview

Matrixyl typically refers to palmitoyl pentapeptide-4 (Pal-KTTKS), a signal peptide widely used in cosmetic science and skincare formulations.

Source & context

Biological / chemical source: Synthetic palmitoylated pentapeptide

Primary research or clinical context: Cosmetic ingredient

Lipidation for skin delivery

Palmitoylation increases lipophilicity to improve topical delivery — a practical peptide modification story outside injectable research markets.

FAQ about Matrixyl

What is Matrixyl?+

Matrixyl typically refers to palmitoyl pentapeptide-4 (Pal-KTTKS), a signal peptide widely used in cosmetic science and skincare formulations.

Is Matrixyl an approved medicine?+

Matrixyl is discussed here as a research / educational topic. Cosmetic ingredient. This is not medical advice.

What is the typical length of Matrixyl?+

Matrixyl is commonly described as approximately 5 amino acids (Cosmetic peptide).

Related peptides

References & further reading

  1. 1.PubChem — compound summary for Palmitoyl pentapeptide-4 / Pentapeptide-4 (CID 9959565)
Disclaimer: Educational content only. Not medical advice. Not instructions for human use. Research peptides and unapproved products may be restricted or illegal to market for human consumption in your jurisdiction. Consult qualified professionals and applicable law.
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Cite this: Peptides Codex — Matrixyl educational profile.
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