Montmorillonite
AKA “Wilkonite, Alum bentonite, Bentonite magma, Colloidal clay, A3N5ZCN45C, aluminum silicate hydrate, aluminium silicate hydrate, INS NO.558, INS-558, Ci 77004
Ingredient
Ingredient Facts
Montmorillonite
AKA: Wilkonite, Alum bentonite, Bentonite magma, Colloidal clay, A3N5ZCN45C, Aluminum silicate hydrate, Aluminium silicate hydrate, INS NO.558, INS-558, Ci 77004
Ingredient · Emulsion Stabilising · EWG: 1
Synthetic
Emulsifier
Clay
Clean
Montmorillonite is a subclass of smectite and a natural aluminomagnesium silicate clay, with potential protective effect for the digestive tract mucosa, and anti-inflammatory and anti-diarrheal activities. Although the exact mechanism of action has yet to be fully elucidated, upon administration, montmorillonite may adsorb bacteria, bacterial enterotoxins, viruses and other potentially diarrheagenic substances. It may also bind to mucin and modify mucus properties, thereby enhancing the mucus barrier function.
Solubility Insoluble in water and common organic solvents
Formula
Al2H2O12Si4
Mol. Weight
360.31
CAS #
1318-93-0
Form
Powder
State
NKRA; Dry Powder, Pellets or Large Crystals; Dry Powder; Other Solid; Dry Powder, Other Solid
See origin →
Functions
Absorbent
Bulking
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Light Stabilizer
Viscosity Controlling
Quells irritation
Reduces redness
Reduces swelling
Shields from UV damage
Strengthens skin barrier
Traditional Use
Used for thousands of years in traditional medicine and skincare across Africa, Asia, and the Middle East for oil absorption and detoxification. Particularly valued in traditional clay treatments for skin purification and wound healing.
Skin Types
all-skin-types
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR