Preservative
CHLORHEXIDINE DIACETATE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A potent cationic antimicrobial used as a preservative — capped by the EU at 0.3% in cosmetics. Highly effective but carries documented sensitisation risk and persistent aquatic toxicity, so use is tightly controlled.
Function
Skin benefits
- Broad-spectrum antimicrobial preservative
- Effective at very low concentrations
- Reduces microbial contamination in oral and topical products
Known concerns
- EU restricts to 0.3% maximum (Annex VI)
- Skin sensitisation and rare anaphylaxis reports
- Aquatic toxicity and environmental persistence
- Tooth/tongue staining in oral applications
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related preservatives
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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.