Abrasive
ALUMINUM MAGNESIUM OXIDE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
An inorganic spinel mineral (MgAl2O4) used as a mild abrasive, carrier or opacifier. Low dermal risk.
Aluminum magnesium oxide (magnesium aluminate spinel, MgAl2O4, CAS 11137-98-7) is a stable ceramic mineral used in cosmetics as a mild abrasive, carrier particle and opacifier. It is chemically inert at skin pH with no meaningful percutaneous absorption of aluminium ions. Inhalation of fine dust during manufacture is a GHS-relevant concern handled at the supplier level rather than the consumer. CIR has not issued a dedicated review of this specific form, but related aluminium-magnesium silicates and oxides are regarded as safe cosmetic excipients.
Function
Skin benefits
- Inorganic mineral used as abrasive, opacifier or carrier
- Chemically inert at skin pH
- Thermal/UV stable
Known concerns
- Fine dust inhalation risk during manufacturing
- Aluminium content is an area of ongoing debate for leave-on use
- Not bioavailable through intact skin
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related abrasives
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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.