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| Field | Last updated |
|---|---|
| Aliases | Palmitoyl pentapeptide-4, Pal-KTTKS, Palmitoyl pentapeptide-3 (older INCI), Procollagen I fragment mimic, Original Matrixyl active |
| Category | Skin & Hair |
| Formula | C₃₉H₇₅N₇O₉ |
| Molecular weight | 802.07 Da |
| Half-life | topical (negligible systemic absorption) |
| Mechanism (summary) | In this report, Matrixyl refers to palmitoyl pentapeptide-4 — the original Matrixyl active. It is a synthetic signal peptide (matrikine) developed for anti-wrinkle cosmetics. Matrixyl 3000 is a different commercial complex built around palmitoyl tripeptide-1 and palmitoyl tetrapeptide-7, which this catalog covers separately under Pal-GHK. |
| Dosing notes | Topical only. CIR-reported concentrations: up to 0.0012% leave-on face/neck and up to 0.0035% in hair conditioners. The 12-week clinical trial used a 3 ppm moisturizer. No systemic or injectable dosing exists. |
| Storage | For finished skincare, follow the product label. For raw peptide material, generic peptide handling: frozen, dry, light-protected storage, often at -20°C or below. |
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| Read more | Full reference → |
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