The Peptide AppField Guide · Longevity SeriesField Specimen

Longevity Category

Matrixyl

Q: What research supports this Matrixyl guide?

This guide links to 3 curated or current research sources. Open the research section to inspect the source titles, publication details, study types, and available abstracts directly.

THE WRINKLE ERASER

Palmitoyl Pentapeptide-4 (Pal-KTTKS)

Matrixyl is a cosmetic peptide that mimics the fragments your skin produces when collagen breaks down. These "matrikine" signals tell your skin cells (fibroblasts) to produce more collagen, elastin, and hyaluronic acid. It's one of the most clinically-studied anti-wrinkle peptides and is found in many premium skincare products.

Matrixyl

Matrixyl Evidence Snapshot

How these guides are reviewed

Regulatory status: Not FDA approved · research use only
Dosing guidance: No established regimen
Linked evidence: 3 research sources
Content updated: Sep 15, 2026

Research links are provided so readers can inspect the supporting evidence directly. Review the sources.

Quick Answers About Matrixyl

Is Matrixyl FDA approved?

No. This profile records Matrixyl as not FDA approved and for research use only.

More context

Review the regulatory and source details on this page for the current context.

What research supports this Matrixyl guide?

This guide links to 3 curated or current research sources.

More context

Open the research section to inspect the source titles, publication details, study types, and available abstracts directly.

Review the Matrixyl research sources

What are the side effects of Matrixyl?

Reported side effects of Matrixyl include Rare irritation and Allergic reaction (uncommon).

More context

They are reported or occasional reactions, not a prediction of what any one person will experience.

Is Matrixyl safe?

Matrixyl has an editorial safety grade of A (Excellent Safety).

More context

Very well tolerated topically with rare irritation. Safety depends on dose, sourcing, health history and medical supervision, so this page does not call it safe for personal use.

Studied Effects & Mechanisms

Collagen Stimulation

Signals fibroblasts to produce new collagen

Elastin Production

Increases elastin synthesis for skin elasticity

Hydration Boost

Enhances hyaluronic acid and GAG production

Matrix Repair

Mimics wound-healing signals to rebuild skin matrix

The lipid-linked pentapeptide

This entry's Pal-KTTKS name describes a five-amino-acid sequence, Lys-Thr-Thr-Lys-Ser, linked to a palmitoyl group. The KTTKS sequence comes from a segment of type I procollagen. Croda identifies palmitoyl pentapeptide-4 as the peptide in its original Matrixyl ingredient. The peptide identity is distinct from the full list of ingredients in a cosmetic formulation.

[Pal-KTTKS sequence description, 2005](https://pubmed.ncbi.nlm.nih.gov/18492182/)

[Pal-KTTKS structural background, 2017](https://pubmed.ncbi.nlm.nih.gov/30603464/)

[Croda, original Matrixyl ingredient identity](https://www.crodabeauty.com/en-gb/products/product/5598-matrixyl)

Who is this for

Those concerned about wrinkles and fine lines

People wanting to improve skin firmness

Anyone seeking non-invasive anti-aging

Those with sun-damaged skin

People looking for science-backed skincare

Matrixyl Dosing

Dosage

No established SubQ regimen.

Cycle

No established SubQ dosing cycle.

Clinical Team Note

Topical concentrations cannot be converted into a human SubQ dose.

Get your exact syringe units with the reconstitution calculator

Reported Timeline

Week 1-2

Improved skin hydration and texture

Week 3-4

Skin feels firmer, fine lines less noticeable

Week 6-8

Visible reduction in wrinkle depth and volume

Visible wrinkle reduction typically seen after 4-8 weeks of consistent use.

Timelines summarize reported or expected patterns and are not guaranteed individual outcomes.

Matrixyl side effects and safety

Excellent Safety

Editorial grade A · Excellent

SafetyAExcellent

FDA approval statusNo · research use only

Very well tolerated topically with rare irritation.

For topical use only. Patch test if you have sensitive skin.

Possible side effects

Rare irritation · Allergic reaction (uncommon)

How to interpret safety grades

The Peptide App

Set up your Matrixyl schedule

Dose reminders and your schedule, ready the moment you open the app.

Commonly Stacked With

GHK-Cu

Collagen signaling from Matrixyl, repair and remodeling from GHK-Cu.

Matrixyl price snapshot

In-stock prices from 7 vendors, checked Oct 15, 2026.

Vendors: 7
Listings: 7
Observed range: $37–$190

Compare all Matrixyl prices →

Market evidence

Matrixyl product testing and COAs

We found certificates from some of the Matrixyl vendors we track. Based on the certificates our crawler found; vendors may publish more than we index. Research on this page describes the molecule. Vendor certificates concern particular market samples or batches; they do not change the research evidence or establish clinical safety, sterility, or suitability for use.

View vendor COAs and pricing →Testing database How to read a COA

Matrixyl research

[1]Robinson et al. (2005): Topical palmitoyl pentapeptide provides improvement in photoaged human facial skin [2]Pal-KTTKS structural background, 2017 [3]Croda, original Matrixyl ingredient identity

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