Argireline (Acetyl Hexapeptide-8)
A signal peptide marketed as a topical 'Botox-like' agent — mildly inhibits neurotransmitter release at the cellular level to soften expression lines.
Overview
Argireline (Acetyl Hexapeptide-8) is a synthetic peptide that mimics the N-terminal sequence of SNAP-25, a protein involved in neurotransmitter release. Topical use has been shown to mildly reduce facial expression line depth, though its effects are far smaller than injectable neurotoxins like Botox.
Benefits
- May reduce expression line depth with continued use
- Well-tolerated topically
- No injection required
- Frequently combined with Matrixyl in multi-peptide serums
Mechanism of Action
Competes with SNAP-25 in the SNARE complex involved in neurotransmitter release, mildly reducing acetylcholine signaling at neuromuscular junctions in the skin.
Dosage (informational only)
- Typical range
- 5–10% concentration in topical formulations
- Frequency
- Daily topical application
Effects are subtle compared to injectable neurotoxins. Best results emerge after 8–12 weeks.
Side Effects
- Generally well-tolerated
- Possible mild irritation
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