Alumina

Alumina 1
photograph
AKA: ALUMINUM OXIDE, Aluminium oxide, 1344-28-1, Aloxite, Gamma-Alumina, Aluminum trioxide, Dialuminum trioxide, Abramant, Abramax, Abrasit
Synthetic
Synthetic
Not Clean
OriginAlumina is derived from bauxite ore, an aluminum oxide mineral found abundantly in tropical regions worldwide. It is extracted through the Bayer process, which uses sodium hydroxide to dissolve aluminum oxide from bauxite ore.
Aluminium oxide is an oxide of aluminum that naturally occurs as the minerals corundum and is also produced by the Bayer process from bauxite. Its most significant use is in the production of aluminium metal, although it is also used as an abrasive due to its hardness and as a refractory material due to its high melting point. Aluminum is the most abundant metal in the earth's crust and is always found combined with other elements such as oxygen, silicon, and fluorine. (L739, L740, L758)
Solubility Insoluble (NIOSH, 2024)
Formula
Al2O3
Mol. Weight
101.96
CAS #
1344-28-1
Form
Powder
State
Aluminum oxide is a white odorless crystalline powder. Water insoluble. Properties (both physical and chemical) vary according to the method of preparation; different methods give different crystallin
Skin Types
●all-skin-types
Functions
Absorbent
Opacifying
Physical Exfoliant
Absorbs Excess Oil
Prevents Clumping
Adds Body & Volume
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
7
CIR
—
Pregnancy
—
CIR Safety Findings
Not a Skin Irritant (CIR report on the ingredient group)
CIR report statement covering this group of ingredients / not tested individually (CIR 643)
Concentration Guide
Leave-on0.0004–60%
Rinse-off0.003–25%
0%50%100%
CIR reported use · 2013 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG