Emulsifier
DEA-HYDROLYZED LECITHIN
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Lecithin modified with diethanolamine (DEA). DEA-family ingredients are flagged for potential nitrosamine formation — largely deprecated.
DEA-hydrolyzed lecithin is formed by reacting hydrolyzed lecithin with diethanolamine. Secondary amines like DEA can react with nitrosating agents (nitrites, other nitrogen oxides) to form N-nitrosodiethanolamine (NDELA), an IARC Group 2B probable human carcinogen. The EU Cosmetics Regulation Annex III entry 60 restricts DEA-containing formulations and requires NDELA levels below 50 ppb in DEA-containing ingredients. California Proposition 65 lists NDELA. The SCCS has expressed concerns, and major cosmetic brands have phased out DEA derivatives. Lecithin itself is benign — the DEA modification is the issue.
Function
Skin benefits
- Modified lecithin — emulsifying and conditioning
- Derived from soy or egg lecithin
Known concerns
- Diethanolamine (DEA) derivative — nitrosamine formation risk with nitrosating agents
- DEA family restricted in EU cosmetics (Annex III entry 60 controls)
- California Prop 65 listed (NDELA)
- Falling out of favor industry-wide
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related emulsifiers
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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.