French Green Clay

AKA: Wilkonite, Alum bentonite, Bentonite magma, Colloidal clay, Aluminum silicate hydrate, Aluminium silicate hydrate, INS NO.558, Ci 77004
Synthetic
Clay
Clean
OriginNative to France. French Green Clay is mined from mineral deposits in France, composed primarily of iron oxide and silicate minerals. The raw clay is extracted, dried, and finely ground into a powder for cosmetic use.
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
Form
Powder
State
NKRA; Dry Powder, Pellets or Large Crystals; Dry Powder; Other Solid; Dry Powder, Other Solid
Skin Types
●all-skin-types, gentle
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
Functions
Absorbent
Quells irritation
Reduces redness
Reduces swelling
Strengthens skin barrier
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe
Pregnancy
Yes
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR