Acetyl Hexapeptide-8 (also known as Argireline or acetyl hexapeptide-3) is a synthetic peptide that mimics the N-terminal end of SNAP-25, mildly inhibiting neurotransmitter release to reduce the appearance of expression lines. It is marketed as a topical alternative to injectable neuromodulators, though its effects are subtler.
| Reported effect | How often | Notes |
|---|---|---|
| Mild transient skin irritation or redness | Uncommon | Generally mild and self-limiting; more likely at higher concentrations or in sensitive skin. |
| Contact dermatitis / allergic sensitization | Rare | Isolated reports; patch testing advised for sensitive individuals. |
| Itching or stinging on application | Rare | Usually associated with the overall formulation rather than the peptide itself. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.