Skip to content

Emulsifier

PEG-66 TRIHYDROXYSTEARIN

66

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A heavily PEGylated castor-oil-derived ester used as a strong emulsifier and emollient. Generally well tolerated, but the high ethoxylation level brings the usual residual 1,4-dioxane concern requiring supplier purity controls.

Function

SURFACTANT - EMULSIFYINGSURFACTANT - CLEANSING

Skin benefits

  • Strong emulsifying capacity
  • Solubilises actives in water
  • Provides emolliency

Known concerns

  • Residual ethylene oxide / 1,4-dioxane impurities possible
  • Higher PEG numbers carry more impurity risk
  • Less mild than non-ethoxylated emulsifiers

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related emulsifiers

66
CETEARETH-22
Emulsifier
 66
DECETH-4 PHOSPHATE
Emulsifier
 66
PEG-12 LANOLATE
Emulsifier
 66
PEG-32 OLEATE
Emulsifier
 66
PEG-50 GLYCERYL ISOSTEARATE
Emulsifier
 66
PEG-90 DIISOSTEARATE
Emulsifier
 66
SODIUM STEARETH-4 PHOSPHATE
Emulsifier
 66
SORBETH-230 TETRAOLEATE
Emulsifier

Check your shelf

Find PEG-66 TRIHYDROXYSTEARIN in your products.

Scan any cosmetic product with LuxSense to see if it contains PEG-66 TRIHYDROXYSTEARIN and get a full ingredient breakdown with safety scores.

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.