They target different kinds of lines, so many people use both. Matrixyl (palmitoyl pentapeptide-4 or Matrixyl 3000) is a signal peptide for the look of fine lines and firmness. Argireline (acetyl hexapeptide-8) is aimed at expression lines such as crow’s feet and forehead lines. Want one product? A multi-peptide serum with both, like The Ordinary Multi-Peptide + HA.
Head to head
| Matrixyl | Argireline | |
|---|---|---|
| INCI name | Palmitoyl pentapeptide-4; Matrixyl 3000 = palmitoyl tripeptide-1 + palmitoyl tetrapeptide-7 | Acetyl hexapeptide-8 (also listed as acetyl hexapeptide-3) |
| Peptide type | Signal peptide | Neurotransmitter-inhibiting peptide |
| Best for | Fine lines, overall smoothness and firmness | Expression lines: crow’s feet, forehead, frown lines |
| Speed | Slow, usually 8–12 weeks | Some studies measure changes from about 4 weeks |
| Tolerance | Very gentle | Very gentle |
How Matrixyl works
Signal peptides are short fragments that, in lab studies, nudge skin cells towards making more collagen and other matrix proteins. In small vehicle-controlled trials, creams with palmitoyl pentapeptide-4 improved the look of fine lines more than the base cream alone. The effect is gradual and modest. Read the short version in Matrixyl explained.
How Argireline works
Argireline is designed to interfere, very mildly, with the signal that makes facial muscles contract. That is why it is marketed for expression lines. Small, short studies report softer-looking lines with twice-daily use, but the effect is far smaller than professional treatments at a clinic and it does not “freeze” anything. More in Argireline: Botox in a bottle?
Which one should you start with?
- Fine lines and a tired, less firm look: start with Matrixyl.
- Lines that appear when you smile or frown: start with Argireline.
- Both, or you want one simple step: a multi-peptide serum that contains both.
- Sensitive skin: either is a good first active; both rarely sting.
Can you use Matrixyl and Argireline together?
Yes. They do not cancel each other out and are often combined in the same formula. If you use two separate serums, apply the thinner, watery one first and follow with moisturizer. In the morning finish with sunscreen, which does more for future lines than any peptide.