Pentapeptide-18 Peptide Therapy
Benefits, Side Effects, Cost & Protocols
Pentapeptide-18 (Leuphasyl) is a cosmetic peptide that inhibits neuronal activity by acting as an enkephalin mimetic. It reduces muscle contraction intensity, helping to smooth expression lines similar to but through a different mechanism than Argireline.
Clinically Reviewed
Reviewed by Alex Evans, PharmD, MBA · Updated May 2026
Evidence-Based
Sourced from FDA, PubMed & ClinicalTrials.gov · View sources
Who Is Pentapeptide-18 Best For?
How Pentapeptide-18 Works
Mimics enkephalin to bind opioid receptors on pre-synaptic neurons, reducing calcium influx and catecholamine release, resulting in decreased muscle contraction and expression line formation.
Pentapeptide-18 FAQ
What is PENTAPEPTIDE-18?
Pentapeptide-18 (Leuphasyl) is a cosmetic peptide with neurotransmitter-inhibiting properties that reduces muscle contraction-related wrinkles, often combined with Argireline for enhanced effects.
How does PENTAPEPTIDE-18 work?
Mimics enkephalin to bind opioid receptors on pre-synaptic neurons, reducing calcium influx and catecholamine release, resulting in decreased muscle contraction and expression line formation.
Is PENTAPEPTIDE-18 legal to buy?
PENTAPEPTIDE-18 is sold as a research chemical for laboratory use only. It is not approved for human use by the FDA. Regulations vary by jurisdiction.
Where can I buy PENTAPEPTIDE-18?
PENTAPEPTIDE-18 has mixed availability - it can be found through both compounding pharmacies (with prescription) and research suppliers.
What category does PENTAPEPTIDE-18 belong to?
PENTAPEPTIDE-18 is primarily classified as a skin, hair & cosmetic peptide. Peptides studied for cosmetic applications including skin rejuvenation, collagen production, tanning, hair growth, and anti-wrinkle effects.
What are the research benefits of PENTAPEPTIDE-18?
PENTAPEPTIDE-18 has been studied for: Expression wrinkle reduction, Muscle relaxation, Synergistic with Argireline, Anti-aging effects. Cosmetic peptide; also known as Leuphasyl. Works synergistically with SNAP-8 and Argireline.
Key Studies
4 total on PubMed3 human trialsRetinol and Oligopeptide-Loaded Lipid Nanocarriers as Effective Raw Material in Anti-Acne and Anti-Aging Therapies
Pawłowska M, Marzec M, Jankowiak W et al
Life (Basel)
Retinol and oligopeptide-loaded nanocarriers reduced sebum secretion and facial wrinkles with improved tolerability
Pentapeptide-18 as an anti-aging candidate: Spectroscopic characterization and molecular interaction analysis
Akhan D, Bicak B, Akalin E et al
In Vitro · Comput Biol Chem
Pentapeptide-18 demonstrated molecular interactions with skin aging pathways via computational and spectroscopic analysis
Solid Lipid Nanoparticles Incorporated with Retinol and Pentapeptide-18-Optimization, Characterization, and Cosmetic Application
Pawłowska M, Marzec M, Jankowiak W et al
In Vitro · Int J Mol Sci
Optimized SLN formulation with retinol and pentapeptide-18 maintained stability over 4 weeks storage
D-tyrosine adds an anti-melanogenic effect to cosmetic peptides
Pentapeptide-18 Compound Data
Pentapeptide-18 News
The Vegan Peptide Serum That Creates an Instant Glass Skin Effect - vogue.com
vogue.com · 7 days ago
New Dermatology Technologies in 2026 - Dermatology Times
Dermatology Times · 2 months ago
D-tyrosine adds an anti-melanogenic effect to cosmetic peptides - Nature
Nature · 77 months ago
Dermatologists Weigh In on the ‘Botox in a Bottle’ Trend - NewBeauty
NewBeauty · 8 months ago
Cosmeceutical Peptides in the Framework of Sustainable Wellness Economy - Frontiers
Frontiers · 67 months ago
News aggregated via Google News. Inclusion does not imply endorsement.
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