Other
PEG-20 DISTEARATE
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A high molecular weight PEG ester (20 EO units) of stearic acid, used as an emollient and viscosity-controlling agent; the extended PEG chain provides excellent water dispersibility and skin tolerability.
PEG-20 Distearate is the polyethylene glycol-20 diester of stearic acid. With an average of 20 EO units (approximate MW ~1,000 Da), this is a high-MW PEG ester with excellent water solubility. The long PEG chain dominates the physicochemical profile, making it effectively non-absorbed through the skin. Stearic acid is a common, safe fatty acid. PEG-20 Distearate is not listed on EU Annex II or III of Regulation (EC) No 1223/2009. The diester structure is relatively stable at typical cosmetic pH (4–8). Residual ethylene oxide and 1,4-dioxane should be monitored per SCCS guidance for polymers with moderate EO content. The substance is widely used in cosmetic emulsions as an emollient and opacifying agent.
Skin benefits
- Provides emollient and opacifying properties
- High water dispersibility makes it suitable for emulsion formulations
Known concerns
- Trace 1,4-dioxane from ethoxylation process
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related others
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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.