Surfactant
DEA-DODECYLBENZENESULFONATE
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A DEA-based anionic surfactant salt. Strong concerns over nitrosamine formation from the diethanolamine moiety have pushed the industry away from DEA ingredients.
DEA-dodecylbenzenesulfonate (CAS 26545-53-9, PubChem CID 22328567) is the diethanolamine salt of dodecylbenzenesulfonic acid — a historical anionic surfactant. The DEA portion is a secondary amine that can react with nitrosating agents present as impurities in other ingredients to form N-nitrosodiethanolamine (NDELA), a suspected carcinogen. The EU restricts the use of DEA-containing ingredients in leave-on cosmetics, and most modern formulators avoid DEA compounds entirely in favour of MEA or TEA alternatives. Beyond the nitrosamine concern, the surfactant itself can be moderately irritating to skin and eyes. Inclusion in a modern EU cosmetic is therefore a significant red flag.
Function
Skin benefits
- Primarily a processing aid
Known concerns
- Secondary amine DEA functional group — potential to form carcinogenic nitrosamines
- EU restricts DEA derivatives in leave-on products
- Potential skin and eye irritant
- Not recommended in modern cosmetic formulation
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related surfactants
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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.