Palmitoyl Tetrapeptide-7 vs FOXO4-DRI
Side-by-side comparison of key properties, dosing, and research.
Skin & Cosmetic
Palmitoyl Tetrapeptide-7Anti-Aging & Longevity
FOXO4-DRI- Summary
- Palmitoyl Tetrapeptide-7 (Rigin) is a cosmetic peptide consisting of palmitic acid linked to the tetrapeptide sequence GQPR (Gly-Gln-Pro-Arg). It was designed to mimic the biological activity of the IgG immunoglobulin C-terminus, which downregulates the production of interleukin-6 (IL-6), a key driver of skin aging and inflammation.
- FOXO4-DRI is a D-retro-inverso peptide derived from the FOXO4 protein that selectively induces apoptosis in senescent cells. By disrupting the FOXO4-p53 interaction that keeps senescent cells alive, it triggers programmed cell death specifically in these aging, pro-inflammatory cells while sparing healthy tissue.
- Half-Life
- Topical penetration-dependent; effects last hours to days
- Estimated 2-4 hours (D-amino acid confers resistance to proteolysis)
- Admin Route
- Topical
- Subcutaneous, Intraperitoneal (research)
- Research
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- Typical Dose
- 2-5 ppm concentration in formulation
- 5 mg/kg in rodent studies; human equivalent approximately 0.5-1 mg/kg
- Frequency
- Twice daily
- 3 consecutive days per cycle
- Key Benefits
- Reduces IL-6 inflammatory cytokine in skin
- Prevents 'inflammaging' of the skin
- Inhibits MMP collagen-degrading enzymes
- Synergistic with Matrixyl for anti-aging
- Clinically tested for wrinkle and skin texture improvement
- Well-tolerated topically
- Selectively clears senescent cells (senolytics)
- Reduces senescence-associated secretory phenotype (SASP) and chronic inflammation
- Demonstrated restoration of physical fitness in aged mice
- May improve healthspan and reduce age-related tissue dysfunction
- Potential for treatment of age-related pathologies driven by cellular senescence
- Does not affect healthy non-senescent cells at therapeutic doses
- Side Effects
- Contact sensitization (rare)
- Well-tolerated at standard concentrations
- Limited human data; largely preclinical evidence
- Possible temporary inflammatory response as senescent cells are cleared (senolytic effect)
- Weight loss observed at high doses in rodent studies
- Unknown long-term safety profile in humans
- Stacks With
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