Lithium Magnesium Silicate
AKA: Silicic acid, Lithium magnesium salt, 37220-90-9, Magnesium lithium silicate, Dilithium;dimagnesium;dioxido(oxo)silane
WHAT IS IT?
Synthetic
Clean
Silicic acid, lithium magnesium salt
Formula
Li2Mg2O9Si3
Mol. Weight
290.80
CAS #
37220-90-9
Form
Powder
WHAT DOES IT DO?
Functions
Binding
Bulking
Viscosity Controlling
Holds Formula Together
Adds Body & Volume
Controls Viscosity
Antioxidant Protection
Wound Healing
Fights Bacteria
Holds ingredients together
Adds volume
Controls product thickness
Traditional Use
A synthetic silicate compound developed in the 20th century for use as a cosmetic thickener and absorbent. No traditional or historical use prior to modern cosmetic formulation.
IS IT CLEAN?
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
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
1 paper →
⚖️
Regulatory
1 listing →
🛡️
Safety-assessed
2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
