Argireline

Cosmetic topical

ClassSNAP-25 mimetic hexapeptide

FormatTopical

RelatedSNAP-8 is a longer cousin

EvidenceCosmetic literature

What it is

Argireline (acetyl hexapeptide-8) is one of the older expression-line cosmetic peptides. It is a topical ingredient, not a research injectable.

Benefits in plain language

What researchers and reference users usually mean when they talk about this compound. These are study themes and common claims — not a promise that it will do this in you.

A topical “expression-line” peptide (acetyl hexapeptide-8) meant to soften the look of crow’s feet and forehead lines.
It tries to quiet the SNARE machinery that helps tiny facial muscles fire — a cosmetic echo of what Botox does, much milder.
This is a cream/serum ingredient, not a systemic injection peptide.
Results, when people notice them, are about look of lines — not restructuring bone or fat.

If a branded, FDA-approved product exists, that label is the only dose that is actually authorized. Research-chemical vials are a different object.

Mechanism of action

Same SNARE-modulation theme as SNAP-8 in culture models that marketers analogize to reduced expression lines.

Possible side effects / caveats

Formula irritation. No toxin-like paralysis. Do not inject cosmetic serums.

Protocol ranges

Source tier	Amount	Frequency / duration	Notes
Cosmetic use	Commonly ~2–10% in leave-on products	Daily topical	Ingredient strength is not a medical dose