Palmitoyl Pentapeptide-4 (Matrixyl)
Human ResearchPalmitoyl Pentapeptide-4 (Matrixyl)
A palmitoyl-conjugated pentapeptide marketed under the name Matrixyl. One of the most studied cosmetic peptides for collagen stimulation and anti-aging skin care.
Dose
0.0025% to 0.01% concentration in topical formulations
Route
Topical
Cycle
Typically continuous for cosmetic application
Storage
Not applicable (typically supplied in solution or within formulations)
What is Palmitoyl Pentapeptide-4 (Matrixyl)?
Palmitoyl Pentapeptide-4, commonly known by its trade name Matrixyl, is a synthetic lipopeptide that gained significant attention in the cosmetic industry for its purported anti-aging properties. It is a palmitoyl-conjugated derivative of the pentapeptide Lys-Thr-Thr-Lys-Ser (KTTKS). The peptide sequence is derived from the C-terminal procollagen type I fragment. In research contexts, it is understood to act as a matricryptin, a peptide fragment that mimics naturally occurring signals from the breakdown of the extracellular matrix. These signals are believed to stimulate fibroblasts to synthesize new extracellular matrix components, including collagen types I, III, and IV, and potentially hyaluronic acid. The palmitoyl group enhances its lipophilicity, improving skin penetration and stability within topical formulations. Research typically investigates its ability to reduce the appearance of wrinkles, improve skin firmness, and enhance overall skin texture.
Key Benefits
- Collagen stimulation
- Wrinkle reduction
- Skin firmness improvement
- Hyaluronic acid stimulation
- Anti-aging skin effects
Mechanism of Action
- Signals fibroblasts to produce collagen types I, III, and IV
- Stimulates hyaluronic acid production
- Mimics collagen breakdown fragments
Best For
- Topical anti-aging skincare research
Body Systems
🐾 Griffin Says...
Molecular Information
Molecular weight
780.0 g/mol
Length
5 amino acids plus palmitoyl group
Type
Lipopeptide
Amino acid sequence
Pal-Lys-Thr-Thr-Lys-Ser-OH (Pal-KTTKS)
Palmitoyl (Pal) refers to a C16 fatty acid attached to the lysine residue, enhancing skin penetration and stability. K=Lysine, T=Threonine, S=Serine.
Pharmacokinetics
Time to peak
Unknown (topical)
Half-life
Topical use only — no systemic half-life established
Time to clear
Unknown (topical)
Research on systemic pharmacokinetics is not typically conducted for topical cosmetic ingredients.
Research Indications
Wrinkle Reduction
Research indicates its ability to significantly reduce the depth and volume of wrinkles, particularly fine lines around the eyes (crow's feet) and forehead, by promoting collagen synthesis.
Collagen Stimulation
Studies show it signals fibroblasts to produce key components of the extracellular matrix, including collagen types I, III, and IV, essential for skin structure and elasticity.
Skin Firmness and Elasticity
By enhancing collagen and potentially elastin production, it contributes to improved skin firmness and elasticity over time, leading to a more toned appearance.
Research Protocols
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| Evaluate wrinkle reduction | 0.0025% to 0.01% in a cream or serum | Twice daily | Topical application to facial skin |
| Assess collagen synthesis | In vitro concentrations typically 1-100 µM | Continuous exposure for cellular assays | In vitro (cell culture) |
| Improve skin firmness and elasticity | 0.005% concentration in a lotion | Once daily | Topical application to target areas |
| Study dermal matrix component production | 0.01% in a vehicle solution | Twice daily for 2-6 months | Topical application in human ex vivo skin models or in vivo studies |
Application should align with typical skincare routines, generally morning and evening.
Peptide Interactions
- Compatible
Retinoids (e.g., Retinol, Tretinoin)
Often used synergistically in anti-aging formulations. Peptides can complement retinoids by stimulating collagen without causing irritation, while retinoids promote cell turnover.
- Compatible
Vitamin C (Ascorbic Acid)
Generally compatible. Both ingredients support collagen synthesis and provide antioxidant benefits, potentially enhancing overall anti-aging effects.
- Compatible
Alpha Hydroxy Acids (AHAs)
Can be used in conjunction. AHAs exfoliate, improving peptide penetration. Some suggest applying AHAs first, followed by peptide serum, to optimize absorption.
- Compatible
Niacinamide (Vitamin B3)
Highly compatible. Niacinamide offers barrier support and anti-inflammatory benefits, which can create an optimal environment for peptide function and reduce potential irritation.
- Use Caution
Copper Peptides
While both are peptides, some formulators suggest avoiding direct co-application in the same product due to potential for interaction or degradation in certain pH environments. Using them at different times of day is a common strategy.
How to Reconstitute
- 1No reconstitution steps are required for consumer use of finished products.
- 2For formulators, follow manufacturer's guidelines for incorporating the raw material into cosmetic bases.
What to Expect
- Weeks 1-4: Initial improvements in skin hydration and minor textural changes may be observed.
- Weeks 4-8: Reductions in the appearance of fine lines and superficial wrinkles might become noticeable.
- Months 2-4: More pronounced improvements in wrinkle depth and overall skin smoothness are commonly reported.
- Months 4-6+: Continued enhancement in skin elasticity and firmness, with sustained anti-aging benefits.
- Ongoing use: Maintenance of improvements in collagen and hyaluronic acid synthesis for continued skin health.
Side Effects & Safety
| Effect | Frequency | Severity |
|---|---|---|
| Rare skin irritation | Rare | Mild |
Ready to calculate your dose? Use Griffin's Peptide Calculator 🐾
Open CalculatorPeptides discussed here are for research purposes only. Nothing on this page is medical advice. Always consult a qualified professional before making health decisions.