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SNAP-8 (Acetyl Octapeptide-3)

Acetyl Octapeptide-3, Acetyl Glutamyl Heptapeptide-1

Research useEducational entry
Mechanism

A synthetic topical octapeptide designed to mimic the N-terminal end of the SNAP-25 protein and compete for a position in the SNARE complex, modulating neurotransmitter (acetylcholine) release and thereby softening the muscle contractions that form expression lines. It is a longer analog of the parent hexapeptide Argireline (acetyl hexapeptide-8).

Evidence

Marketed as a cosmetic ingredient with modest evidence. Most efficacy figures (wrinkle-depth reductions) come from manufacturer-sponsored or in-vitro studies; independent peer-reviewed human data specific to SNAP-8 are limited. The closest published mechanistic evidence relates to the parent SNARE peptide Argireline.

Applications
  • Topical leave-on cosmetics (serums, creams) targeting expression lines
  • Marketed as a topical 'peptide' alternative to reduce dynamic wrinkles around the eyes and forehead
  • Formulation ingredient combined with other cosmetic peptides
Protocol

Educational overview only — no dosing instructions in the public hub. SNAP-8 is a topical cosmetic ingredient, typically used at low percentages in leave-on formulations per manufacturer guidance.

Risks

Generally used topically at low concentrations; main practical concerns are formulation quality and skin irritation/sensitivity in some users. It is a cosmetic ingredient, not an injectable or systemic drug, and is not a substitute for botulinum toxin.

Quality

As a cosmetic ingredient it should carry an INCI declaration (Acetyl Octapeptide-3) and supplier specification; for raw material, a CoA (purity + quantification + MS) is the minimum verification.

Legal status

A recognized cosmetic ingredient (INCI: Acetyl Octapeptide-3) permitted in leave-on cosmetic products. It is not an approved drug and makes no approved therapeutic claim.

✓ Last reviewed · 2026-07-21

Frequently asked questions

What is SNAP-8 (Acetyl Octapeptide-3) used for?
Topical leave-on cosmetics (serums, creams) targeting expression lines. Marketed as a topical 'peptide' alternative to reduce dynamic wrinkles around the eyes and forehead. Formulation ingredient combined with other cosmetic peptides. Marketed as a cosmetic ingredient with modest evidence. Most efficacy figures (wrinkle-depth reductions) come from manufacturer-sponsored or in-vitro studies; independent peer-reviewed human data specific to SNAP-8 are limited. The closest published mechanistic evidence relates to the parent SNARE peptide Argireline.
Is SNAP-8 (Acetyl Octapeptide-3) legal in Europe?
A recognized cosmetic ingredient (INCI: Acetyl Octapeptide-3) permitted in leave-on cosmetic products. It is not an approved drug and makes no approved therapeutic claim.
What are the risks and side effects of SNAP-8 (Acetyl Octapeptide-3)?
Generally used topically at low concentrations; main practical concerns are formulation quality and skin irritation/sensitivity in some users. It is a cosmetic ingredient, not an injectable or systemic drug, and is not a substitute for botulinum toxin.
How is the quality of SNAP-8 (Acetyl Octapeptide-3) assessed?
As a cosmetic ingredient it should carry an INCI declaration (Acetyl Octapeptide-3) and supplier specification; for raw material, a CoA (purity + quantification + MS) is the minimum verification.