Magnesium Silicate
AKA “Ambosol, Silicic acid, magnesium salt, Magsorbent, Avibest, Britesorb, Gastomag, Magmasil”
Mineral
Ingredient Facts
Magnesium silicate
AKA: Ambosol, Silicic acid, Magnesium salt, Magsorbent, Avibest, Britesorb, Gastomag, Magmasil
Mineral · Absorbent · EWG: 4
Synthetic
Mineral
Clean
A naturally-derived mineral that absorbs moisture and keeps powder products smooth and blended, preventing clumping while improving texture.
Solubility Insoluble
Formula
MgO3Si
Mol. Weight
100.39
CAS #
1343-88-0
Form
Powder
State
Other Solid; Pellets or Large Crystals, Other Solid
See origin →
Functions
Absorbent
Anticaking
Bulking
Opacifying
Viscosity Controlling
Absorbs Excess Oil
Prevents Clumping
Adds Body & Volume
Adds Opacity
Antioxidant Protection
Wound Healing
Fights Bacteria
Traditional Use
Used historically in traditional medicine and as a natural absorbent; commercially developed in the early 20th century for cosmetics. Functions as a dry powder, absorbent, and opacifying agent in pressed powders and dry formulations.
Skin Types
●all-skin-types
Best For
Oiliness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Final Report on the Safety Assessment of Aluminum Silicate, Calcium Silicate, Magnesium Aluminum Silicate, Magnesium Silicate, Magnesium Trisilicate, Sodium Magnesium Silicate, Zirconium Silicate, Att
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Calcium Magnesium Silicate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lithium Magnesium Silicate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Magnesium Silicate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Sodium Magnesium Silicate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Final report on the safety assessment of aluminum silicate, calcium silicate, magnesium aluminum silicate, magnesium silicate, magnesium trisilicate,
Elmore AR, Cosmetic Ingredient Review Expert Panel
International journal of toxicology, 2003
Lithium Magnesium Silicate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Magnesium Silicate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Sodium Magnesium Silicate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
The preparation of lactoferrin/magnesium silicate lithium injectable hydrogel and application in promoting wound healing.
Wang B, Zhao J, Lu W, Ma Y, Wang X et al.
International journal of biological macromolecules, 2022
The preparation of lactoferrin/magnesium silicate lithium injectable hydrogel and application in promoting wound healing.
Wang B, Zhao J, Lu W, Ma Y, Wang X et al.
International journal of biological macromolecules, 2022
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR