Palmitoyl Pentapeptide-4 (Matrixyl) vs Acetyl Tetrapeptide-5: which Korean skincare ingredient?
Palmitoyl Pentapeptide-4 (Matrixyl) vs Acetyl Tetrapeptide-5: Palmitoyl Pentapeptide-4 (Matrixyl) leans toward anti-ageing & firmness, while Acetyl Tetrapeptide-5 targets dark circles & eye area. Can you use both? Yes — they layer well together.
| Palmitoyl Pentapeptide-4 (Matrixyl) | Acetyl Tetrapeptide-5 | |
|---|---|---|
| What it is | The best known of the signal peptides, and a fixture in Korean firming ampoules. The idea is that a short fragment resembling a collagen breakdown product nudges skin to behave as though it should rebuild. Evidence is real but modest, and the visible payoff over months is a fraction of what a retinoid delivers. | The peptide that turns up in almost every eye product making a puffiness claim. The proposed idea involves fluid and protein cross-linking under thin eye skin; the supporting data is thin and largely supplier-generated. Reasonable to have in an eye cream. Not reasonable to expect it to do anything about hollowing or inherited pigment. |
| Best for | Anti-ageing & firmness, Loss of firmness & elasticity, Mature skin care | Dark circles & eye area, Anti-ageing & firmness |
| When to use | BOTH | BOTH |
Which should you choose?
Choose Palmitoyl Pentapeptide-4 (Matrixyl) if your priority is Anti-ageing & firmness; choose Acetyl Tetrapeptide-5 for Dark circles & eye area. Many Korean routines use both — yes — they layer well together.
Palmitoyl Pentapeptide-4 (Matrixyl) guide →Acetyl Tetrapeptide-5 guide →
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.