Argireline vs Leuphasyl

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

Argireline

Argireline (Acetyl Hexapeptide-3) is a widely-used cosmetic peptide that reduces wrinkle depth by inhibiting neurotransmitter release. One of the first 'Botox-like' peptides developed for topical use.

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Leuphasyl

Leuphasyl (Pentapeptide-18) is a cosmetic peptide that reduces muscle tension through a mechanism similar to enkephalins. Often combined with Syn-Ake for enhanced anti-wrinkle effects.

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Side-by-Side Comparison

Aspect	Argireline	Leuphasyl
Dose Range	500 mcg–1 mg	200 mcg–500 mcg
Frequency	2x daily	2x daily
Cycle Length	4–8 weeks	4–8 weeks
Route	topical	topical
Mechanism	Inhibits the formation of the SNARE complex required for neurotransmitter release, reducing the intensity of muscle contractions that cause expression lines.	Mimics enkephalin and binds to enkephalin receptors on muscle cells, reducing acetylcholine release and thereby decreasing muscle contraction intensity.
Typical Dosage	Topical: 5-10% concentration in serums, applied twice daily. Higher concentrations used in professional treatments.	Topical: 3-8% concentration in serums. Often used in combination products with other muscle-relaxing peptides.
Administration	Topical application to clean skin. Most effective on expression lines (forehead, crow's feet). Consistent use required for visible results.	Topical application to expression lines. Best results with consistent twice-daily use over 8+ weeks.
Side Effects	Generally very well-tolerated. Occasional mild irritation or dryness. No systemic absorption at cosmetic doses.	Very well-tolerated topically. No significant adverse effects reported at cosmetic concentrations.
Best For	Anti-Aging & Longevity Skin Health & Aesthetics	Skin Health & Aesthetics