Pa
Palmitoyl Tetrapeptide-7
Palmitoyl Tetrapeptide-7Active
Signaling peptide. Promoted for soothing and fine lines; the partner peptide in Matrixyl 3000.
What it does
Palmitoyl tetrapeptide-7 is a four-amino-acid peptide on a palmitic-acid tail. It's promoted both as a soothing ingredient (modulating IL-6 inflammatory signaling, per manufacturer studies) and as a fine-line ingredient. Most often paired with palmitoyl tripeptide-1 in the Matrixyl 3000 blend. Same caveats apply: manufacturer evidence > independent evidence.
The evidence, graded
strongMost cosmetic peptides (Matrixyl, copper peptides, palmitoyl tripeptide-1) show measurable firmness or elasticity changes in 8-12 weeks of consistent twice-daily use. Visible benefits are typically subtle compared to retinoids.Robinson 2005 · International Journal of Cosmetic Science ↗
expert consensusPeptides support collagen production through pathways distinct from retinoids. Combining the two can compound anti-aging benefits without compounding irritation.Mukherjee 2006 · Clinical Interventions in Aging ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Pairs worth knowing
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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