Skin ⏱ Half-life: Variable (topical, dependent on penetration) Experimental

Argireline

Acetyl Hexapeptide-3 (Argireline)

Updated March 30, 2026

Evidence at a Glance

Regulatory statusExperimental
Acetyl hexapeptide-8; topical cosmetic ingredient regulated by FDA as a cosmetic, not a drug; no drug approval.
Human evidenceLimited
Animal evidenceLimited

Argireline (acetyl hexapeptide-8) is a topical cosmetic peptide marketed as a 'Botox alternative,' supported by mixed, mostly low-quality and manufacturer-funded studies showing at best modest wrinkle effects.

What the research does not support

  • Is not a drug and is not FDA-approved; it is regulated only as a cosmetic ingredient.
  • Does not act like injectable botulinum toxin and cannot paralyze muscle when applied to the skin.
  • Penetrates skin poorly, limiting how much reaches its target; an independent 2023 trial found no significant wrinkle reduction.
Half-Life
Variable (topical, dependent on penetration)
Purity
≥95% (cosmetic grade)
Mol. Weight
888.92 Da
Form
Powder for formulation or finished cosmetic products

What is Argireline?

Argireline (Acetyl Hexapeptide-3) is one of the most commercially successful cosmetic peptides, marketed as a topical alternative to botulinum toxin injections. Developed by Lipotec (now part of Lubrizol), it represents a growing category of signal peptides used in anti-aging skincare to modulate cellular processes through topical application.

Dosage Information (Research Use)

Topical: 5-10% concentration in creams or serums. Apply twice daily to clean skin. Allow 4-6 weeks for visible results. Cosmetic ingredient — not for injection.

Reconstitution & Handling

Formulate into serums or creams at 5-10% concentration. Stable in water-based formulations at pH 5-7.

Half-Life & Pharmacokinetics

Variable (topical, dependent on penetration)

Reported Observations in Literature

Generally well-tolerated topically. Rare contact dermatitis in sensitive individuals. No systemic effects at cosmetic concentrations. Not for use around eyes in individuals with myasthenia gravis.

Key Research References

  • Blanes-Mira C et al. “A synthetic hexapeptide with antiwrinkle activity.” Int J Cosmet Sci. 2002;24:303-10

How Argireline Works

Argireline mimics the N-terminal end of SNAP-25, a protein essential for neurotransmitter vesicle docking at the neuromuscular junction. By competing with native SNAP-25 for incorporation into the SNARE complex, it reduces the efficiency of acetylcholine release, leading to decreased muscle contraction intensity. This produces a "Botox-like" effect without injection, reducing dynamic expression wrinkles.

Research Applications

🔬 Cosmetic wrinkle reduction
🔬 Topical peptide delivery
🔬 Neuromuscular junction modulation

Research Findings

Clinical studies show 10% Argireline cream reduces wrinkle depth by approximately 30% over 30 days of use. Effects are reversible upon discontinuation. Penetration is limited to the epidermis and upper dermis with standard formulations; liposomal delivery systems enhance deeper penetration.

Dosage & Administration

Topical: 5-10% concentration in creams or serums. Apply twice daily to clean skin. Allow 4-6 weeks for visible results. Cosmetic ingredient — not for injection.

Safety & Side Effects

Generally well-tolerated topically. Rare contact dermatitis in sensitive individuals. No systemic effects at cosmetic concentrations. Not for use around eyes in individuals with myasthenia gravis.

Important: All safety information is derived from published research, primarily animal studies. No controlled human clinical trial data exists unless explicitly noted. This compound is sold for research purposes only.

Quick Facts

Sequence Ac-Glu-Glu-Met-Gln-Arg-Arg-NH2
Molecular Weight 888.92 Da
Half-Life Variable (topical, dependent on penetration)
Purity ≥95% (cosmetic grade)
Form Powder for formulation or finished cosmetic products
Storage Store powder at -20°C. Formulated products: room temperature, protect from light.

Key Research References

  • Blanes-Mira C et al. "A synthetic hexapeptide with antiwrinkle activity." Int J Cosmet Sci. 2002;24:303-10

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