Emulsifier
PEG-9 ISOSTEARATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
PEG-9 Isostearate is a polyethylene glycol ester of isostearic acid used as a mild emulsifier and emollient. It helps stabilize emulsions and leaves skin feeling soft and smooth.
Skin benefits
- Nonionic emulsifier and emollient for skincare formulas
- Improves spreadability and skin feel of creams and lotions
- Compatible with a wide range of oils and actives
Known concerns
- PEG ingredients may contain trace 1,4-dioxane impurities
- May enhance penetration of other ingredients into damaged skin
- Possible mild irritation on broken or compromised skin
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, so always read the physical product label and consult a healthcare professional for personal concerns.