QUATERNIUM-8
Other
Good
About QUATERNIUM-8
A benzethonium-type quaternary ammonium antimicrobial and conditioning agent widely used in cosmetic formulations for its broad-spectrum preservation and anti-static properties.
Detailed Analysis
Quaternium-8 is a cosmetic nomenclature designation for benzethonium chloride or related alkyldimethyl(ethylbenzyl)ammonium compounds, which are aromatic quaternary ammonium salts with broad antimicrobial activity. These compounds are used as preservatives and conditioning agents in cosmetic formulations at typical concentrations of 0.1-0.5%. They are not listed in EU Annex II (prohibited) or Annex III (restricted), though they must comply with the EU Preservatives Regulation (Annex VI). The SCCS has assessed benzalkonium chloride compounds and set safe use limits, noting that higher concentrations can cause skin irritation. At regulated use levels, they are considered safe and effective preservatives.
Skin Benefits
- ✓ Broad-spectrum antimicrobial preservation
- ✓ Antistatic conditioning for hair care
- ✓ Effective against gram-positive bacteria and some fungi
Known Concerns
- ⚠ Skin and eye irritation at concentrations above typical use levels
- ⚠ Environmental aquatic toxicity typical of quaternary ammonium compounds
Safety Score
Good
Based on EU regulatory data, published safety research, and ingredient function analysis.
References
EU CosIng Database
European Commission cosmetic ingredient registry
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Download LuxSenseThis information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.