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Thickener

STEARETH-100/PEG-136/HDI COPOLYMER

CAS 103777-69-1
65

Safety score · 0–100

Fine

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

A high-MW polyurethane-style polymer used to thicken and stabilize lotions. Made from steareth-100, PEG-136 and HDI. Bound polymer is generally inert in cosmetics.

Function

VISCOSITY CONTROLLING

Skin benefits

  • Thickener and rheology modifier
  • Stabilizes emulsions
  • Improves product spread

Known concerns

  • Trace residual isocyanate possible from manufacturing
  • Limited public toxicology

References

EU

EU CosIng database

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

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Check your shelf

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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.