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PEG-5 TALLOW BENZONIUM CHLORIDE

52

Safety score · 0–100

Moderate

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

About

A tallow-derived quaternary ammonium compound with a benzonium structure, functioning as a preservative and conditioner but carrying significant sensitisation risks.

PEG-5 tallow benzonium chloride is a benzalkonium-type (benzonium) quaternary ammonium compound derived from tallow and ethoxylated with approximately 5 moles of ethylene oxide. Benzonium chloride derivatives are known contact sensitisers and are restricted in EU Annex III for rinse-off products at a maximum of 0.1%. The PEG-5 chain adds additional concern for 1,4-dioxane contamination. Use in leave-on products is more restricted.

Skin benefits

  • Provides broad-spectrum antimicrobial preservation
  • Conditions hair and reduces static

Known concerns

  • Known skin and respiratory sensitiser (benzonium class)
  • Restricted in EU rinse-off products at ≤0.1%
  • Risk of 1,4-dioxane from PEG-5 chain

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.