Argireline and Palmitoyl Tripeptide-38 are each a topical skincare peptide.
Same target, different schedules: Argireline daily; Palmitoyl Tripeptide-38 twice daily (supplier study).
| Comparison | Argireline (Acetyl Hexapeptide-8) acetyl hexapeptide-8 · acetyl hexapeptide-3 | Palmitoyl Tripeptide-38 Matrixyl Synthe'6 · Matrixyl synthe 6 |
|---|---|---|
| How it works | How it works Argireline is marketed as topical Botox. The comparison is directionally right about the target and badly wrong about the magnitude. | How it works Palmitoyl tripeptide-38 is a matrikine mimic: a scrap of a matrix protein that, the supplier says, signals skin cells to build more matrix. |
| What it is | A topical Botox-like peptide that softens fine lines, needle-free. | The peptide behind Matrixyl synthe'6, a topical anti-wrinkle ingredient from Sederma. |
| Status | CosmeticCosmetic ingredient | CosmeticCosmetic ingredient |
| Typical dose | 0.0015–0.005 % per dose | 0.0005–0.001 % per dose |
| How often | Daily | Twice daily (supplier study) |
| Stays active | Not measured, and not the right question | Not measured, and not the right question |
| Dose comes from | Community practice | Published human study |
| Cycled? | Not cycled Community practice | Not cycled Community practice |
| What it does | ||
| Drug class | Cosmetic peptide (topical) | Cosmetic peptide (topical) |
| Used for | A topical Botox-like peptide in many anti-aging serums that relaxes fine expression lines. It is milder and needle-free. | A topical skincare peptide in serums and creams aimed at wrinkles. The '6' is the six skin-matrix components the supplier says it stimulates, not six peptides. |
| Receptors hit | — | — |
| Numbers | ||
| Full dose line | Serum, per product | Serum or cream, per product |
| Why that cycle | Used daily as part of a routine. The effect depends on continued use and returns to baseline when you stop, so there is nothing to cycle off. | Used daily as part of a routine. Whatever effect it has depends on continued use, so there is nothing to cycle off. |
| Weight / effect | Not measured in a trial | Not measured in a trial |
| Chain length | 6 residues | 3 residues |
| Common vial | — | — |
| Before you start | ||
| Route | On the skin (topical) | On the skin (topical) |
| Do not use if | A known allergy to the ingredient Broken skin | A known allergy to the ingredient Broken skin |
What separates them
Proof behind the dose. Palmitoyl Tripeptide-38 has a dose from a published human study. Argireline has a range that comes from community practice, with no published human study behind it.
What doesn't differ: They are both taken the same way (on the skin) and aimed at the same thing (anti-wrinkle skincare). Neither has a measured effect size from a published trial, so there is no number to rank them on.
What people actually report
Argireline (Acetyl Hexapeptide-8)
- Generally well tolerated on the skin, with occasional mild irritation. The effect is subtle compared with injectables.
- A rash, swelling, or intense itching where applied
Palmitoyl Tripeptide-38
- Occasional mild irritation.
- No injected form.
- A rash, swelling, or intense itching where applied
Side effects are what users and trials report most often, not a complete list. Anything sudden, spreading, or breathing-related is an emergency regardless of which compound caused it.
People also compare
This comparison does not cover cost, long-term safety, or how you personally will respond. Effect figures come from separate trials in different populations and are not always directly comparable to each other. Nothing here is medical advice or a recommendation to use any of these. Talk to a clinician about your own situation.