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Antimicrobial

CETRIMONIUM BROMIDE

CAS 57-09-0
52

Safety score · 0–100

Moderate

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

Cetrimonium bromide (CTAB) is a cationic surfactant with antimicrobial and hair-conditioning effects. Useful at low % in rinse-off but irritating in concentrate.

Skin benefits

  • Cationic surfactant and conditioner
  • Antimicrobial preservative
  • Improves wet combability of hair

Known concerns

  • Eye and skin irritant in concentrate
  • EU restricts use levels
  • Avoid leave-on at high %

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.