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DENATONIUM BENZOATE

CAS 3734-33-6
85

Safety score · 0–100

Good

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

The world's most bitter substance — added at trace levels to nail polishes and some cosmetics to discourage accidental ingestion, especially by children. Decades of safe use and CIR-reviewed.

Skin benefits

  • Strongest bittering agent known
  • Used to deter accidental ingestion
  • Effective at trace concentrations
  • Long established safety record

Known concerns

  • Bitter taste residue if transferred to lips
  • Not for products intentionally tasted

References

EU

EU CosIng database

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

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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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.