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ALUMINUM HYDROXIDE OXIDE

CAS 11139-78-9 Updated
72

Safety score · 0–100

Fine

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

About

Boehmite — a mineral form of aluminum hydroxide oxide used as an inert filler and pigment coater, especially for sunscreens. Topical absorption is negligible.

Function

ANTIMICROBIALASTRINGENTSKIN CONDITIONINGSKIN PROTECTING

Skin benefits

  • Opacifier and bulking agent
  • Coats pigments to improve dispersion
  • Inert mineral
  • Used in sunscreens to coat TiO2/ZnO

Known concerns

  • Aluminum exposure is regulated in antiperspirants but topical absorption is very low
  • Avoid inhalation of dry powder
  • Not for use on broken skin

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.