Magnesium Aluminometasilicate
AKA “Silodrate, Simaldrate, Silodrate [USAN], Simaldrate [INN], MP-1051, SIMALDRATE [WHO-DD], Silodrate (USAN)
Mineral
Ingredient Facts
Magnesium aluminometasilicate
AKA: Silodrate, Simaldrate, Silodrate [USAN], Simaldrate [INN], MP-1051, SIMALDRATE [WHO-DD], Silodrate (USAN)
Mineral · Absorbent · EWG: 4
Synthetic
Mineral
Clean
A mineral powder that keeps formulas smooth and prevents clumping, while helping products glide on evenly and look flawless.
Formula
Al2H2Mg2O12Si3
Mol. Weight
380.84
CAS #
12408-47-8
Form
Powder
See origin →
Functions
Absorbent
Anticaking
Bulking
Opacifying
Viscosity Controlling
Anti-Inflammatory
Fights Acne
Antioxidant
Protects skin from free radical damage caused by UV, pollution, and stress
Traditional Use
A synthetic clay mineral developed for cosmetics in the 20th century, derived from traditional clay-based skincare practices; used as an absorbent and anti-caking agent in powders.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR