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Surfactant (DEA derivative, restricted)

MYRISTAMIDE DEA

CAS 7545-23-5
40

Safety score · 0–100

Moderate

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

A fatty acid diethanolamide used historically as a foam booster, but DEA-based surfactants are restricted in many markets because they can form carcinogenic nitrosamines in finished products.

Skin benefits

  • Functions as a foam booster and viscosity enhancer in cleansers
  • Provides creamy stable lather in shampoos
  • Has been used historically as an antistatic agent

Known concerns

  • Diethanolamides can react with nitrosating agents to form nitrosamines, which are carcinogenic
  • California Proposition 65 lists cocamide DEA and related DEA-containing ingredients as carcinogens
  • EU SCCS recommends avoiding free DEA and DEA-containing ingredients in cosmetics due to nitrosamine risk
  • Skin and eye irritation reported in concentrated forms

References

EU

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, so always read the physical product label and consult a healthcare professional for personal concerns.