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PEG-10 STEARYL BENZONIUM CHLORIDE

55

Safety score · 0–100

Moderate

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

About

A benzalkonium-type preservative combined with PEG-10 that has surfactant and antimicrobial properties but can be a skin sensitizer.

PEG-10 stearyl benzonium chloride is a quaternary ammonium compound related to benzalkonium chloride but with an added PEG-10 chain. Benzonium chloride derivatives are known contact sensitisers, and the PEG chain raises additional concern regarding potential contamination with 1,4-dioxane, a probable carcinogen. Under EU Annex III (Entry 57), benzalkonium chloride is restricted to ≤0.1% in ready-to-use rinse-off products; other benzonium derivatives are evaluated similarly.

Skin benefits

  • Provides antimicrobial preservation
  • Antistatic conditioning properties

Known concerns

  • Known skin and respiratory sensitizer
  • Risk of 1,4-dioxane contamination from PEG
  • Benzalkonium-type compounds restricted in EU for rinse-off products

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 — always read the physical product label and consult a healthcare professional for personal concerns.