Leuphasyl vs Palmitoyl Tripeptide-1

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

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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Palmitoyl Tripeptide-1

Palmitoyl Tripeptide-1 (Pal-GHK) is a lipopeptide that stimulates collagen production. It's one of two peptides in the Matrixyl 3000 complex, working synergistically with Palmitoyl Tetrapeptide-7.

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Side-by-Side Comparison

Aspect	Leuphasyl	Palmitoyl Tripeptide-1
Dose Range	200 mcg–500 mcg	500 mcg–2 mg
Frequency	2x daily	2x daily
Cycle Length	4–8 weeks	4–12 weeks
Route	topical	topical
Mechanism	Mimics enkephalin and binds to enkephalin receptors on muscle cells, reducing acetylcholine release and thereby decreasing muscle contraction intensity.	Mimics the skin's own mechanism for producing collagen by acting as a messenger peptide that signals fibroblasts to produce more collagen and other extracellular matrix components.
Typical Dosage	Topical: 3-8% concentration in serums. Often used in combination products with other muscle-relaxing peptides.	Topical: Typically 2-4% in serums, often combined with Palmitoyl Tetrapeptide-7 as Matrixyl 3000.
Administration	Topical application to expression lines. Best results with consistent twice-daily use over 8+ weeks.	Topical application 1-2 times daily. The palmitoyl group enhances skin penetration compared to non-lipidated versions.
Side Effects	Very well-tolerated topically. No significant adverse effects reported at cosmetic concentrations.	Very well-tolerated. Suitable for most skin types including sensitive skin.
Best For	Skin Health & Aesthetics	Anti-Aging & Longevity Skin Health & Aesthetics