Matrixyl vs Thymulin

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

Matrixyl

Matrixyl (Palmitoyl Pentapeptide-4) is a signal peptide that stimulates collagen and extracellular matrix production. It is one of the most well-studied anti-aging peptides with proven efficacy for wrinkle reduction.

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Thymulin

Thymulin (Facteur Thymique Sérique) is a zinc-dependent nonapeptide hormone produced by thymic epithelial cells. It plays important roles in T-cell differentiation and immune system maturation.

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Side-by-Side Comparison

Aspect	Matrixyl	Thymulin
Dose Range	500 mcg–2 mg	100 mcg–400 mcg
Frequency	2x daily	1x daily
Cycle Length	4–12 weeks	4–8 weeks
Route	topical	subcutaneous
Mechanism	Mimics collagen breakdown fragments, triggering fibroblasts to produce new collagen, elastin, and other matrix components. Essentially tricks skin into repair mode without actual damage.	Requires zinc for biological activity. Promotes T-cell differentiation, modulates cytokine production, and influences neuroendocrine function. Levels decline significantly with age.
Typical Dosage	Topical: 2-8% concentration in serums and creams. Matrixyl 3000 combines it with Palmitoyl Tetrapeptide-7 for enhanced effects.	Research protocols vary. Often studied alongside zinc supplementation. Typical research doses in the microgram range.
Administration	Topical application 1-2 times daily. Can be combined with other actives like retinol, vitamin C, and other peptides.	Subcutaneous or intramuscular injection in research settings. Requires adequate zinc status for activity.
Side Effects	Very well-tolerated. Rare mild irritation. Suitable for sensitive skin types.	Limited data on exogenous administration. Theoretical effects on immune function require monitoring.
Best For	Anti-Aging & Longevity Skin Health & Aesthetics	Immune Support Anti-Aging & Longevity