Matrixyl
Also known as: Palmitoyl Pentapeptide-4, Pal-KTTKS
Palmitoyl Pentapeptide-4, a signal peptide that stimulates collagen and fibronectin production. One of the most well-studied cosmetic peptides for anti-aging skincare. Acts as a fragment of collagen I that signals fibroblasts to increase extracellular matrix synthesis.
Research Status
Moderate Clinical Data
For research purposes only. Not approved for human use. Not medical advice.
Research Areas
Side Effects
May occur in sensitive individuals during the first few days of use. Typically resolves with continued use as skin acclimates. If irritation persists, reduce frequency to 1x daily or discontinue use.
Some users report mild tingling upon application, particularly if applied to freshly cleansed skin. This is generally self-resolving and does not indicate harm.
Rare but possible in individuals with known peptide or cosmetic ingredient sensitivities. Perform a patch test on a small area of skin 24 hours before full-face application. Discontinue if rash, swelling, or severe itching develops.
May occur in very dry skin types. Ensure adequate moisturizer is applied after Matrixyl. Consider reducing application frequency if dryness persists.
Dosing Reference
| Parameter | Value |
|---|---|
| Dose range | 2-5 % |
| Frequency | 1-2x daily |
| Timing | Morning and/or evening skincare routine |
| Route | Topical |
Topical application only. Matrixyl is typically incorporated into serums, creams, or moisturizers at 2–5% concentration. Start with 1x daily application and increase to 2x daily if well-tolerated. Results are cumulative and typically visible after 4–8 weeks of consistent use.
Research disclaimer
Figures drawn from published research literature and community logs. Not clinical recommendations. Consult a qualified professional. Research use only.
Reconstitution Guide
Do not use saline or bacteriostatic saline — use only bacteriostatic water for reconstitution
Do not shake the vial vigorously; gentle swirling prevents peptide degradation
Discard immediately if the solution appears cloudy, discolored, or contains visible particles
Use within 30 days of reconstitution when stored at 2–8°C
Do not freeze the reconstituted solution; freezing may denature the peptide
Use the PeptideVolt reconstitution calculator for your exact concentration
Molecular and Pharmacological Data
| Molecular weight | 755.9 g/mol (palmitoyl pentapeptide) |
| Sequence | KTTKS (with N-terminal palmitoyl modification) |
Matrixyl (Palmitoyl Pentapeptide-4) mimics a fragment of collagen I and acts as a signaling molecule to dermal fibroblasts. When applied topically, it binds to cell surface receptors and triggers intracellular pathways that upregulate collagen I, collagen III, and fibronectin production. This increases dermal matrix density and improves skin firmness and elasticity.
Fibroblast Activation via Collagen Fragment Signaling
The pentapeptide sequence (KTTKS) is recognized by fibroblasts as a breakdown product of collagen, triggering a wound-healing-like response that increases collagen synthesis and deposition in the dermis.
Extracellular Matrix (ECM) Remodeling
Increased production of collagen I, collagen III, and fibronectin strengthens the dermal scaffold, reducing the appearance of fine lines and improving skin texture and firmness.
- Matrixyl is a synthetic pentapeptide derived from collagen I sequence
- The palmitoyl lipid modification enhances skin penetration and stability
- Stimulates collagen and fibronectin production in dermal fibroblasts
- Effects are cumulative and typically visible after 4–8 weeks of consistent use
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View all peptidesResearch Use Only. All content on this page is provided for informational and educational purposes related to scientific research. Matrixyl is not approved for human use by the FDA or any equivalent regulatory body. This is not medical advice. Do not use any substance discussed here for therapeutic, diagnostic, or preventative purposes. Consult a qualified healthcare professional before making any health-related decisions. The Peptide Volt does not endorse the use of any research chemicals. 18+ only.