Sodium Silicate
AKA: Waterglass, Sodium siliconate, Sodium sesquisilicate, Sodium silicate glass, Sodium water glass, Britesil, Carsil, Dryseq, Sikalon
Synthetic
Not Clean
The Expert Panel for Cosmetic Ingredient Safety concluded that the following 24 silicate ingredients are safe in cosmetics in the present practices of use and concentration described in this safety assessment when formulated to be non-irritating, with the exception that the available data are insufficient to make a determination of safety for the use of naturally-sourced (i.e., mined) silicate ingredients in products that may be incidentally inhaled: Sodium Metasilicate.
Solubility VERY SOL IN COLD & HOT WATER; SOLUBLE IN DILUTE SODIUM HYDROXIDE; INSOLUBLE IN ALCOHOL, ACIDS /NONAHYDRATE/
Formula
Na2O3Si
Mol. Weight
122.06
CAS #
1344-09-8
Form
Powder
State
Sodium silicate appears as a powdered or flaked solid substance. Strong irritant to skin, eyes, and mucous membranes. May be toxic by ingestion. Concentrated aqueous solutions used as a glue.
Functions
Anticorrosive
Buffering
Prevents Corrosion
Stabilizes pH
Anti-Aging Benefits
Antioxidant Protection
Locks In Moisture
Prevents product degradation
Maintains optimal pH
Traditional Use
Discovered in the early 19th century through glass chemistry research. Used in cosmetics as a binding agent, film former, and antioxidant from the 20th century forward.
Skin Types
●all-skin-types
Best For
General
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