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Thickener

HYDROXYBUTYL METHYLCELLULOSE

CAS 9041-56-9 Updated
90

Safety score · 0–100

Excellent

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

About

A modified-cellulose polymer that thickens formulations and forms a soft, breathable film on skin. Plant-derived, very high molecular weight, and consistently rated as low-irritation in safety reviews.

Function

BINDINGEMULSION STABILISINGFILM FORMINGLIGHT STABILIZERVISCOSITY CONTROLLING

Skin benefits

  • Builds smooth, even viscosity
  • Forms a flexible breathable film
  • Plant-derived and biodegradable

Known concerns

  • No significant concerns at cosmetic concentrations

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.