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Skin Conditioning

TETRAPEPTIDE-109

68

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A numbered four-amino-acid peptide used in skin-conditioning formulas. Gentle, supplier-evidenced.

Tetrapeptide-109 is an INCI-numbered proprietary tetrapeptide. Class-level, tetrapeptides have a long safety track record — several (e.g., acetyl tetrapeptide-5, palmitoyl tetrapeptide-7) have published independent data. For this specific numbered grade, efficacy support comes from the supplier and no CIR or SCCS monograph exists. Typical use: ppm to sub-percent in leave-on skincare.

Function

NOT REPORTED

Skin benefits

  • Skin-conditioning peptide
  • Mild, well-tolerated

Known concerns

  • No independent monograph
  • Proprietary evidence

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.