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PEG-160 SORBITAN TRIISOSTEARATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A heavily ethoxylated sorbitan triisostearate (160 mol EO) used as a skin-conditioning emulsifier, typically in formulations requiring very high water solubility.
PEG-160 Sorbitan Triisostearate is a highly ethoxylated polysorbate-class emulsifier with a very high EO number (160), making it extremely water-soluble and suitable for aqueous cosmetic formulations. It is not listed in EU Cosmetics Regulation Annexes II–VI. The very high degree of ethoxylation results in a substantial free PEG fraction, which is separately evaluated by some regulatory frameworks. The primary regulatory watchpoint remains potential 1,4-dioxane contamination from the ethoxylation process, controlled under EU cosmetics purity standards.
Skin benefits
- Highly effective solubiliser for water-based formulations
- Skin-conditioning properties from the isostearate moiety
Known concerns
- Potential trace 1,4-dioxane from ethoxylation (EU-regulated impurity)
- Significant free PEG fraction from very high EO degree
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.