Emulsifier / surfactant (PEG ether)
CETETH-4
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Ceteth-4 is a polyethylene glycol ether of cetyl alcohol used as a non-ionic emulsifier and surfactant, generally well tolerated but with concerns over potential dioxane impurities.
Skin benefits
- Non-ionic emulsifier that stabilises oil-in-water creams and lotions
- Mild surfactant useful in cleansers and skin-conditioning emulsions
- Helps disperse oils and improves texture in rinse-off and leave-on products
Known concerns
- Ethoxylated material may contain trace 1,4-dioxane impurities if not adequately purified
- Can be mildly irritating to skin and eyes at higher concentrations
- May enhance penetration of other ingredients into the skin
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, so always read the physical product label and consult a healthcare professional for personal concerns.