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Palmitoyl Tetrapeptide-7, sold under the name Rigin, is a synthetic cosmetic peptide; a four-amino-acid chain (glycine-glutamine-proline-arginine) with a palmitic acid tail to help it settle into the skin. It is used topically as an anti-aging and anti-inflammatory skincare ingredient, marketed on the idea that it dampens a signaling molecule called interleukin-6. It is a cosmetic ingredient, and the strongest data comes from manufacturer testing rather than large independent trials.
- Proposed anti-inflammatory effect
- Skin conditioning
- Generally well tolerated
- Local irritation
- Redness
- Possible contact allergy
Mechanism
The palmitoyl fatty-acid tail improves the 's passage through the skin's oily barrier, after which the tetrapeptide is proposed to reduce production of interleukin-6 (IL-6), a pro-inflammatory (a small signaling protein) that rises with age and with UV exposure. By nudging IL-6 down, the ingredient is meant to reduce low-grade inflammation thought to contribute to glycation and matrix breakdown in aging skin. This anti-inflammatory framing is plausible and often cited, but the effect size in real human skin is modest and best treated as cosmetic.
receptor fingerprint
Interleukin-6 (IL-6)suppression (proposed)
Dermal fibroblastsconditioning signal
Safetyrisks and cautions, not medical advice
As a topical cosmetic peptide it is usually well tolerated; the main concerns are local irritation, redness, or allergy, often driven by other ingredients in the finished product. Systemic absorption is expected to be low and there is little safety data for pregnancy or breastfeeding, so patch-testing and caution are reasonable. Not medical advice.
Subjective profileweighing the evidence above
A gentle, low-risk cosmetic ingredient whose claims rest largely on manufacturer testing. Fine as part of a formula you already like, but not worth paying a premium for on its own; a retinoid and daily sunscreen do far more for aging skin.
Resources
This entry is here for reference.
Research
- 1.Injectable polypeptide/chitosan hydrogel with loaded stem cells and rapid gelation promoting angiogenesis for diabetic wound healing
- 2.Usage of Synthetic Peptides in Cosmetics for Sensitive Skin
2 listed here; entry last updated July 2026
Reviews
My notesprivate to this device
FAQ
What is Rigin?
Rigin is a trade name for Palmitoyl Tetrapeptide-7, a cosmetic peptide marketed for its proposed ability to lower interleukin-6 in the skin.
Does lowering IL-6 really reverse aging?
The IL-6 story is plausible but the real-world effect on skin is modest and cosmetic; do not expect dramatic changes.
Is it safe with retinoids or acids?
It is often combined with them, but stacking actives can increase irritation, so introduce products gradually and patch-test. This is not medical advice.
Adverse effects
- Local irritation
- Redness
- Possible contact allergy