Palmitoyl Tripeptide-1 vs PE-22-28
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
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.
Full details →PE-22-28
PE-22-28 is a synthetic peptide fragment derived from research on the SAMP8 mouse model of accelerated aging. It has shown potential for enhancing memory and reducing cognitive decline.
Full details →Side-by-Side Comparison
| Aspect | Palmitoyl Tripeptide-1 | PE-22-28 |
|---|---|---|
| Dose Range | 500 mcg–2 mg | 500 mcg–2 mg |
| Frequency | 2x daily | 1x daily |
| Cycle Length | 4–12 weeks | 1–2 weeks |
| Route | topical | subcutaneous |
| Mechanism | 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. | Derived from the protein that is deficient in SAMP8 mice. May work by inhibiting protein phosphatase 2A methylesterase, thereby affecting memory-related signaling pathways. |
| Typical Dosage | Topical: Typically 2-4% in serums, often combined with Palmitoyl Tetrapeptide-7 as Matrixyl 3000. | Research protocols vary. Intranasal dosing has been studied at various concentrations. Optimal human dosing not established. |
| Administration | Topical application 1-2 times daily. The palmitoyl group enhances skin penetration compared to non-lipidated versions. | Intranasal administration preferred for CNS delivery. Research compound with limited human use data. |
| Side Effects | Very well-tolerated. Suitable for most skin types including sensitive skin. | Very limited human data. Primarily studied in animal models for safety and efficacy. |
| Best For |
What They Have in Common
Palmitoyl Tripeptide-1, PE-22-28 are both commonly used for:
Key Differences
Unique to Palmitoyl Tripeptide-1:
Unique to PE-22-28:
Which Has Stronger Evidence?
- Anti-Aging & Longevity: Palmitoyl Tripeptide-1 has stronger research support.
| Goal | Palmitoyl Tripeptide-1 | PE-22-28 |
|---|---|---|
| Anti-Aging & Longevity | medium | low |
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