--- title: Matrixyl entity_type: Ingredient canonical_url: https://skinknowledgebase.com/ingredients/matrixyl date_modified: 2026-05-07 date_reviewed: 2026-05-07 mcp_eligible: true evidence_sources: - title: Schagen 2017 — Topical peptide treatments with effective anti-aging results canonical_citation_url: https://skinknowledgebase.com/sources/schagen-2017-peptide-review original_source_url: https://www.mdpi.com/2079-9284/4/2/16 source_type: other - title: Robinson LR et al., "Topical palmitoyl pentapeptide provides improved skin appearance" canonical_citation_url: https://skinknowledgebase.com/sources/robinson-2005-pal-kttks-clinical original_source_url: https://pubmed.ncbi.nlm.nih.gov/18492182/ source_type: peer_reviewed - title: Fields K et al., "Bioactive peptides: signaling the future of antiaging" canonical_citation_url: https://skinknowledgebase.com/sources/fields-bioactive-peptides original_source_url: https://doi.org/10.1111/j.1473-2165.2009.00416.x source_type: peer_reviewed - title: Lupo MP, Cole AL, "Cosmeceutical peptides" (Dermatologic Therapy) canonical_citation_url: https://skinknowledgebase.com/sources/lupo-cole-cosmeceutical-peptides original_source_url: https://pubmed.ncbi.nlm.nih.gov/18045359/ source_type: peer_reviewed - title: Katayama K et al., "A pentapeptide from type I procollagen promotes extracellular matrix production" canonical_citation_url: https://skinknowledgebase.com/sources/katayama-procollagen-pentapeptide original_source_url: https://pubmed.ncbi.nlm.nih.gov/8486721/ source_type: peer_reviewed - title: DermNet NZ — Cosmeceuticals canonical_citation_url: https://skinknowledgebase.com/sources/dermnet-cosmeceuticals original_source_url: https://dermnetnz.org/topics/role-of-growth-factors-in-skin-creams source_type: medical_reference - title: American Academy of Dermatology — Wrinkle treatments overview canonical_citation_url: https://skinknowledgebase.com/sources/aad-wrinkles original_source_url: https://www.aad.org/public/cosmetic/wrinkles source_type: medical_reference product_fact_sources: [] --- # Matrixyl ## Quick Summary Matrixyl is a cosmetic signaling peptide best known by its INCI name Palmitoyl Pentapeptide-4 (also written Pal-KTTKS). It is one of the most-cited peptides in modern leave-on anti-aging skincare and is widely used in serums and creams positioned for the appearance of fine lines and wrinkles. In cosmetic-appearance literature, Matrixyl is described as a "messenger" peptide that signals dermal fibroblasts toward producing extracellular-matrix proteins. It is not a neuromodulator, not a prescription anti-aging therapy, and not interchangeable with the related Matrixyl 3000 or Matrixyl Synthe-6 compositions. ## What It Is Matrixyl is the trade name commonly used by formulators for Palmitoyl Pentapeptide-4, a five-amino-acid signaling peptide attached to a palmitic-acid (fatty) tail. The fatty tail is added to help the peptide pass through the lipid-rich outer layer of skin in a leave-on cosmetic. The peptide sequence itself is derived from a fragment of type I procollagen, which is the molecular family from which the term "matrikine" (matrix-derived signaling peptide) takes its meaning. In leave-on cosmetic skincare, Matrixyl is most often paired with hydrating ingredients such as hyaluronic acid and supportive peptides such as Argireline (Acetyl Hexapeptide-8) or Synthe-6. ## Mechanism In peer-reviewed cosmetic-peptide reviews, Matrixyl is grouped with signaling (matrikine) peptides: small fragments described as cueing dermal fibroblasts toward producing extracellular-matrix proteins such as collagen I and III, fibronectin, and glycosaminoglycans. The original mechanism description is most often traced to Katayama and colleagues, who reported that a pentapeptide derived from type I procollagen could promote extracellular-matrix production in cultured fibroblast models. In topical cosmetic studies, the appearance-level outputs typically reported include the look of finer lines, smoother surface texture, and modest improvements in self-rated firmness over study windows of roughly 8 to 12 weeks. Reported effects are gradual and modest, not transformative; cosmetic peptide reviews consistently describe peptides as one supporting tool in a layered routine rather than a single dominant active. ## Related Entities - [Schagen 2017 — Topical peptide treatments with effective anti-aging results](https://skinknowledgebase.com/sources/schagen-2017-peptide-review) - [Robinson LR et al., "Topical palmitoyl pentapeptide provides improved skin appearance"](https://skinknowledgebase.com/sources/robinson-2005-pal-kttks-clinical) - [Fields K et al., "Bioactive peptides: signaling the future of antiaging"](https://skinknowledgebase.com/sources/fields-bioactive-peptides) - [Lupo MP, Cole AL, "Cosmeceutical peptides" (Dermatologic Therapy)](https://skinknowledgebase.com/sources/lupo-cole-cosmeceutical-peptides) - [Katayama K et al., "A pentapeptide from type I procollagen promotes extracellular matrix production"](https://skinknowledgebase.com/sources/katayama-procollagen-pentapeptide) - [DermNet NZ — Cosmeceuticals](https://skinknowledgebase.com/sources/dermnet-cosmeceuticals) - [American Academy of Dermatology — Wrinkle treatments overview](https://skinknowledgebase.com/sources/aad-wrinkles) - [Fine Lines](https://skinknowledgebase.com/concerns/fine-lines) - [Wrinkles](https://skinknowledgebase.com/concerns/wrinkles) - [Crepey Neck Skin](https://skinknowledgebase.com/concerns/crepey-neck-skin) - [Crow's Feet](https://skinknowledgebase.com/concerns/crow-s-feet) - [Expression Lines](https://skinknowledgebase.com/concerns/expression-lines) - [Forehead Wrinkles](https://skinknowledgebase.com/concerns/forehead-wrinkles) - [Turkey Neck](https://skinknowledgebase.com/concerns/turkey-neck) - [Sagging Neck Skin](https://skinknowledgebase.com/concerns/sagging-neck-skin) - [TRUE Serums Matrixyl Serum](https://skinknowledgebase.com/products/true-serums-matrixyl-serum) - [Dermagist Dynamic Age Defying Serum](https://skinknowledgebase.com/products/dermagist-dynamic-age-defying-serum) - [Dermagist Eye Revolution Gel](https://skinknowledgebase.com/products/dermagist-eye-revolution-gel) - [Dermagist Collastin](https://skinknowledgebase.com/products/dermagist-collastin) - [Dermagist Neck Restoration Cream](https://skinknowledgebase.com/products/dermagist-neck-restoration-cream) - [Dermagist Original Wrinkle Smoothing Cream](https://skinknowledgebase.com/products/dermagist-original-wrinkle-smoothing-cream)