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Thickener

QUATERNIUM-90 MONTMORILLONITE

Updated
70

Safety score · 0–100

Fine

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

About

Montmorillonite clay treated with a quaternary ammonium compound to make it work in oil-based formulas as a thickener and stabiliser. Inert and well tolerated on skin.

Function

SURFACTANT - EMULSIFYINGVISCOSITY CONTROLLING

Skin benefits

  • Thickener and viscosity controller
  • Stabilises emulsions
  • Suspends pigments
  • Inert clay base

Known concerns

  • Quaternary ammonium can mildly irritate sensitive skin
  • Avoid inhalation of dry powder
  • Not biodegradable

References

EU

EU CosIng database

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

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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.