Surfactant
COCAMIDE DEA
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A DEA-based foam booster flagged by IARC as possibly carcinogenic. Can form nitrosamines in formula — avoid where possible.
Function
Skin benefits
- Foam booster and viscosity builder in cleansers
Known concerns
- IARC Group 2B: possibly carcinogenic to humans
- Can form carcinogenic nitrosamines with nitrosating agents
- California Prop 65 listed
- EU requires nitrosamine controls
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Frequently Asked Questions
Answers in plain language
Is cocamide DEA banned in Europe?
Not banned outright, but restricted. Cocamide DEA (cocamide diethanolamine) is permitted in EU cosmetics provided the residual free diethanolamine (DEA) content stays below 0.5%, and it must not be used together with nitrosating agents (which could form carcinogenic nitrosamines). The restriction reflects concerns about the DEA contaminant rather than cocamide DEA itself.
What are the side effects of cocamide DEA?
The main regulatory concern is formation of N-nitrosodiethanolamine (NDELA), a carcinogen, when cocamide DEA is used together with nitrosating agents. The EU restriction prevents this combination. Direct skin effects at permitted concentrations are uncommon; mild irritation or contact allergy can occur in sensitive individuals.
Related surfactants
Same plant / compound family
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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.