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Hair Conditioning

DIETHYLAMINOETHYL STEARATE

CAS 3179-81-5 Updated
55

Safety score · 0–100

Moderate

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

About

A fatty-amine ester (stearic acid + diethylaminoethanol) used as a conditioning emulsifier. Mid-tier safety: mostly fine, but the tertiary-amine group warrants nitrosamine watch.

Function

CLEANSINGSURFACTANT - EMULSIFYINGFOAMINGHAIR CONDITIONINGSURFACTANT - CLEANSING

Skin benefits

  • Cationic conditioning
  • Emulsification
  • Smoothing for hair fibers

Known concerns

  • Tertiary amine nitrosamine concern with co-formulated nitrites
  • Eye irritant in undiluted form
  • Limited recent cosmetic safety reviews

References

EU

EU CosIng database

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

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CETETHYLDIMONIUM BROMIDE
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CETRIMONIUM CHLORIDE
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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.