Magnesium Trisilicate

Magnesium Trisilicate 1
AKA: 14987-04-3, Magnesium trisilicate anhydrous, Magnesium silicate (Mg2Si3O8), Magnesium silicates magnesium trisilicate, SILICIC ACID (H4SI3O8), MAGNESIUM SALT (1:2), Mag trisil co
Synthetic
Clean
Dimagnesium trisilicon octaoxide
Solubility Insoluble in water and alcohol
Formula
Mg2O8Si3
Mol. Weight
260.86
CAS #
14987-04-3
Form
Powder
State
Fine, white powder, free from grittiness
Functions
Abrasive
Absorbent
Anticaking
Bulking
Opacifying
Viscosity Controlling
Physical Exfoliant
Absorbs Excess Oil
Prevents Clumping
Adds Body & Volume
Antioxidant Protection
Wound Healing
Fights Bacteria
Traditional Use
A synthetic mineral compound developed in the early 20th century as a pharmaceutical and cosmetic ingredient. Used primarily as an absorbent and anti-caking agent in powder formulations.
EWG
1
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
Skin Types
●all-skin-types
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR