Sodium Magnesium Aluminum Silicate
AKA: Silicic acid, Aluminum magnesium sodium salt, 12040-43-6, Aluminum;magnesium;sodium;dioxido(oxo)silane, Sodium magnesium aluminosilicate
WHAT IS IT?
Synthetic
Not Clean
Silicic acid, aluminum magnesium sodium salt
Formula
AlMgNaO9Si3
Mol. Weight
302.53
CAS #
12040-43-6
Form
Powder
State
Dry Powder
WHAT DOES IT DO?
Functions
Absorbent
Anti-Inflammatory
Antimicrobial
Fights Acne
Absorbs excess oil
Traditional Use
Developed in the 20th century as a modern clay-derived ingredient, building on the historical use of clays in skincare (used for thousands of years in Egyptian and Chinese medicine for oil absorption and skin purification).
IS IT CLEAN?
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA
✔ permitted
EU
⚠ restricted
JAPAN
⚠ restricted
CANADA
⚠ restricted
Regulatory Agencies
EWG
CIR
FDA
EU COSING
Health Canada
IS IT FOR ME?
Skin Types
●
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
CAN I TRUST THIS?
The paper trail
🔬
Peer-reviewed
none on file
⚖️
Regulatory
0 listings
🛡️
Safety-assessed
1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
