Palmitoyl Tetrapeptide-7 Explained
Palmitoyl Tetrapeptide-7 is a tiny synthetic peptide that people use in skincare to fight wrinkles and keep skin looking younger. Think of your skin like a brick wall—collagen and elastin are the mortar holding it together. Over time, inflammation causes enzymes in your skin to break down that mortar faster than your body can rebuild it, creating sagging and wrinkles. This peptide is designed to stop that breakdown process.
Here's how it actually works: your skin naturally produces something called interleukin-6, which is basically an inflammation signal. When this signal gets sent, it activates cleanup enzymes called matrix metalloproteinases—think of them as tiny scissors that cut apart your collagen and elastin. Palmitoyl Tetrapeptide-7 steps in and tells your skin cells to make less of that inflammation signal, which means fewer scissors are activated and less damage happens to your existing collagen. It's like putting the brakes on the demolition process.
The peptide works best paired with another one that does the opposite job—actively building new collagen. So together they create a two-part strategy: one rebuilds what's been lost while this one protects what's already there, giving your skin a fighting chance against aging.
Dosage Information
Typical Dose
2-4% concentration in topical formulation
Frequency
Once or twice daily
Administration
Topical serum or cream
Half-Life
~6 hours
estimatedNotes
Most commonly used in the Matrixyl 3000 combination with Palmitoyl Tripeptide-1. Synergistic effects are greater than either peptide alone.
Why this matters
Anti-inflammatory skin peptide; palmitoyl group enhances dermal absorption.
Protocol cycle
Where does Palmitoyl Tetrapeptide-7 sit?
See how this peptide compares across all 150 peptides in our database.
Evidence Score
0.12
Compound Data
Molecular Formula
C34H62N8O7
Molecular Weight
694.90 g/mol
IUPAC Name
(2S)-2-[[(2S)-1-[(2S)-5-amino-2-[[2-(hexadecanoylamino)acetyl]amino]-5-oxopentanoyl]pyrrolidine-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoic acid
PubChem CID
10078408Potential Side Effects
Palmitoyl Tetrapeptide-7 discussions
Quick Facts
- Administration
- Topical serum or cream
- Typical Dose
- 2-4% concentration in topical formulation
- Frequency
- Once or twice daily
- References
- 0 curated + 1 from PubMed
- Evidence Score
- 0.1 / 100
Frequently Asked Questions about Palmitoyl Tetrapeptide-7
What is Palmitoyl Tetrapeptide-7?
Palmitoyl Tetrapeptide-7 is a synthetic lipopeptide that works synergistically with Palmitoyl Tripeptide-1 in the widely used Matrixyl 3000 combination. While Palmitoyl Tripeptide-1 stimulates matrix production Palmitoyl Tetrapeptide-7 reduces the inflammatory degradation of that matrix by inhibiting interleukin-6. Together they represent a two-pronged approach to skin aging — building collagen while simultaneously preventing its destruction. Multiple clinical trials have demonstrated the combination's efficacy for wrinkle reduction and skin rejuvenation.
How does Palmitoyl Tetrapeptide-7 work?
Palmitoyl Tetrapeptide-7 is a fragment of the immunoglobulin G Fc region that acts as an anti-inflammatory signal in skin tissue. Its primary mechanism is inhibition of interleukin-6 (IL-6) — a pro-inflammatory cytokine that activates matrix metalloproteinases (MMPs) which degrade collagen and elastin. By reducing IL-6 production in keratinocytes and fibroblasts Palmitoyl Tetrapeptide-7 reduces MMP activity protecting existing collagen and elastin from degradation. This anti-inflammatory mechanism complements the collagen-stimulating activity of Palmitoyl Tripeptide-1 — one peptide builds collagen while the other prevents its breakdown. The palmitoyl group provides the same lipophilic penetration enhancement as in Palmitoyl Tripeptide-1.
What is the recommended dosage for Palmitoyl Tetrapeptide-7?
The typical dose is 2-4% concentration in topical formulation. Once or twice daily. Administration: Topical serum or cream. Most commonly used in the Matrixyl 3000 combination with Palmitoyl Tripeptide-1. Synergistic effects are greater than either peptide alone.
What are the side effects of Palmitoyl Tetrapeptide-7?
Excellent safety profile in clinical studies. Skin irritation (rare). No known systemic effects at topical doses
What is the Palmitoyl Tetrapeptide-7 cycle protocol?
Palmitoyl Tetrapeptide-7 is typically cycled continuous. Topical application, no cycling protocol specified
Questions reflect common community inquiries. This is not medical advice.