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Colorant

MANGANESE OXIDE

CAS 11129-60-5
50

Safety score · 0–100

Moderate

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

About

Manganese oxide — an inorganic pigment with occupational inhalation hazards. Not an established cosmetic UV filter.

Manganese oxide (CAS 11129-60-5) refers to various manganese-oxide forms (MnO, Mn2O3, MnO2) used as inorganic pigments and in specialty technical roles. In cosmetics, manganese oxides are limited to colour applications and are present as trace components in some mineral pigments. Manganese compounds are well documented as neurotoxic on chronic inhalation or high systemic exposure (manganism — Parkinsonian syndrome), and GHS generally classifies fine powders as hazardous by inhalation. Topical dermal exposure to finished cosmetics presents far lower risk, but the ingredient is not an established SPF-booster or UV filter despite the current category listing. Orange tier reflects occupational and powder-handling hazards plus the mismatch with UV-filter claims.

Function

UV ABSORBER

Skin benefits

  • Colorant / pigment in decorative cosmetics
  • Potential UV-absorber role in sunscreen research
  • Inorganic and stable

Known concerns

  • Manganese compounds are neurotoxic with chronic high exposure
  • Inhalation of fine powder is hazardous (manganism)
  • Not a well-established cosmetic UV filter

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.