Peptide library / Skin & aging / Palmitoyl tetrapeptide-7
Palmitoyl tetrapeptide-7
A four amino acid fragment of an antibody, used to calm skin inflammation signals.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Reduce wrinkles and inflammation, topicalSmall human studies
How it is thought to work
It is reported to lower interleukin-6, an inflammatory signal that rises with sun exposure and aging.
What the evidence shows
Small manufacturer-sponsored trials reported smoother skin after about two months.
Safety and unknowns
Well tolerated.
Regulatory status
Cosmetic ingredient, not a drug.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
More in Skin & aging
Palmitoyl tripeptide-1
Cosmetic and topicalGHK with a fatty acid tail to help it cross the skin barrier.
Palmitoyl tripeptide-38
Cosmetic and topicalA newer cosmetic peptide marketed to rebuild several structural proteins in skin.
Palmitoyl pentapeptide-4
Cosmetic and topicalA five amino acid fragment of collagen with a fatty acid tail, the best-studied anti-wrinkle peptide.
General information, not medical advice. Do not buy or inject unregulated peptides.