Peptide profile
Pentapeptide-18 (Leuphasyl)
Leu-enkephalin analog for expression lines
Compare Pentapeptide-18 (Leuphasyl) with other peptides →Summary
A skin cream that gently relaxes tiny face muscles.
- Typical dose
- 1-5% concentration 1-2x daily
- Route
- Topical
- Cycle length
- Ongoing
- Evidence
- Limited human data
Mechanism
How it works
Leuphasyl works like a subtle dimmer switch for facial muscles — gentler than Argireline but with a longer-lasting smoothing effect.
Pentapeptide-18 is a Leu-enkephalin analog that binds to opioid receptors on nerve terminals, reducing acetylcholine release and muscle contraction.
Reported in research
Benefits
- Softens wrinkles from frowning (forehead, eyes)
- Gentler than Argireline but lasts longer
- Relaxes small face muscles softly
- Works great with other wrinkle-fighting helpers
Context, not a prescription
Dosing
- Typical range
- 1-5% concentration 1-2x daily (Topical)
- Cycle length
- Ongoing
Safety
Side effects & contraindications
Possible side effects
- Minimal; very well tolerated
- Mild redness (rare)
Contraindications
- Known peptide sensitivity
Research information, not medical advice. Always consult a licensed clinician before considering any peptide.
In depth
Full profile
What it does
Softer facial expressions and shallower wrinkles when you move your face.
How it works
Leuphasyl is like a dimmer switch for face muscles. It is gentle and the smooth look lasts a long time.
It grabs onto special spots on nerve cells. This quiets the message that tells muscles to squeeze.
What to expect
You can see a difference in about 3-4 weeks.
- Weeks 2-3: Forehead lines start to look a little softer.
- Weeks 4-6: Fewer lines near your eyes.
- Weeks 8-10: Skin looks its smoothest.
Good to know
- Test a small patch of skin first
- Start with a weaker amount
Staying safe
- Almost none; most people feel fine
Avoid if you have:
- People who react badly to peptides
Mechanism of action
Pentapeptide-18 is a Leu-enkephalin analog that binds to opioid receptors on nerve terminals, reducing acetylcholine release and muscle contraction.
Binds to G-protein-coupled opioid receptors on presynaptic neurons, inhibiting calcium influx and vesicle fusion.
Pharmacodynamics
Visible improvement at 3-4 weeks.
Softer facial expressions, reduced dynamic wrinkle depth.
Timeline
- Weeks 2-3: Subtle softening of forehead lines.
- Weeks 4-6: Reduced crow's feet.
- Weeks 8-10: Maximum smoothing effect.
Comparisons
- Leuphasyl — effectiveness Moderate, safety Excellent, cost $$, Very Easy to use
- Argireline — effectiveness Moderate, safety Excellent, cost $, Very Easy to use
Adverse effects
Common:
- Minimal; very well tolerated
Rare:
- Mild redness (rare)
Contraindications & risk mitigation
Contraindicated in:
- Known peptide sensitivity
- Patch test first
- Start with lower concentration
Qué hace
Expresiones faciales más suaves y arrugas menos profundas al mover la cara.
Cómo funciona
Leuphasyl es como un regulador de intensidad para los músculos faciales. Es suave y el aspecto liso dura mucho tiempo.
Se une a puntos especiales en las células nerviosas. Esto calma el mensaje que indica a los músculos que se contraigan.
Qué esperar
Puedes notar una diferencia en unas 3-4 semanas.
- Semanas 2-3: Las líneas de la frente comienzan a verse un poco más suaves.
- Semanas 4-6: Menos líneas cerca de los ojos.
- Semanas 8-10: La piel luce lo más lisa posible.
Bueno saber
- Prueba una pequeña zona de la piel primero
- Comienza con una cantidad menor
Manteniéndose seguro
- Casi ninguno; la mayoría de las personas se sienten bien
Evitar si tienes:
- Personas que reaccionan mal a los péptidos
Mecanismo de acción
Pentapeptide-18 es un análogo de Leu-encefalina que se une a los receptores opioides en los terminales nerviosos, reduciendo la liberación de acetilcolina y la contracción muscular.
Se une a receptores opioides acoplados a proteínas G en neuronas presinápticas, inhibiendo la entrada de calcio y la fusión de vesículas.
Farmacodinamia
Mejora visible a las 3-4 semanas.
Expresiones faciales más suaves, reducción de la profundidad de las arrugas dinámicas.
Cronología
- Semanas 2-3: Suavización sutil de las líneas de la frente.
- Semanas 4-6: Reducción de las patas de gallo.
- Semanas 8-10: Efecto alisador máximo.
Comparaciones
- Leuphasyl — efectividad Moderada, seguridad Excelente, costo $$, Muy fácil de usar
- Argireline — efectividad Moderada, seguridad Excelente, costo $, Muy fácil de usar
Efectos adversos
Comunes:
- Mínimo; muy bien tolerado
Raros:
- Enrojecimiento leve (raro)
Contraindicaciones y mitigación de riesgos
Contraindicado en:
- Sensibilidad conocida a péptidos
- Realizar prueba de parche primero
- Comenzar con una concentración menor
Reference data
Specifications
- Route
- Topical
- Cycle length
- Ongoing
FAQ
Common questions
How is Leuphasyl different from Argireline?
Leuphasyl is gentler, longer-acting, and works via opioid receptors vs SNARE inhibition.
Can I combine them?
Yes, they work synergistically through different mechanisms for better wrinkle reduction.
What is the evidence level?
This compound is classified as Limited human data. Some human data exists but trials are small, short-term, or not yet replicated.
Research
Research & sources
Current evidence for Pentapeptide-18 (Leuphasyl) is rated as Limited human data. Limited human data is available.
- 1. Leuphasyl cosmetic study (2008) — DOI:10.1111/j.1473-2165.2008.00363.x
- 2. Neuropeptides in anti-aging (2018) — DOI:10.1111/jocd.12690
- 3. Leuphasyl cosmetic study (2008)
- 4. Neuropeptides in anti-aging (2018)