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STEARAMIDOETHYL DIETHANOLAMINE
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A fatty acid alkanolamide derived from stearic acid and diethanolamine, used as a viscosity-controlling and emollient conditioning ingredient in cosmetic formulations.
Stearamidoethyl Diethanolamine (CAS 55819-54-0) is a fatty acid amide of diethanolamine formed from stearic acid (C18 saturated). It functions as a viscosity-controlling agent, emulsifier, and hair/skin conditioning ingredient in cosmetic formulations. Fatty acid alkanolamides are widely used in cosmetic formulations with a long history of safe use. The compound is not listed in EU Annex II (prohibited) or Annex III (restricted). Some diethanolamine (DEA) derivatives have raised concerns regarding N-nitrosamine formation under specific storage conditions, but this is primarily relevant for DEA itself and certain derivatives; stearic acid-derived alkanolamides are considered lower risk in this regard.
Skin benefits
- Viscosity-controlling in cosmetic formulations
- Emollient and skin-softening properties
- Conditions hair by coating the fiber
Known concerns
- Minor nitrosamine formation risk under extreme storage conditions (rare with stearic acid derivatives)
- Skin irritation possible at high concentrations
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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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.