Fuller's Earth

AKA: Fuller's earth clay, Montmorillonite clay
Synthetic
Clay
Not Clean
English Fullers Earth,Solum Fullonum (EU)
CAS #
8031-18-3
Form
Powder
Functions
Abrasive
Absorbent
Bulking
Opacifying
Anticaking
Gel Forming
Anti-Inflammatory
Moisturizing
Improves Elasticity
Traditional Use
Named after the fulling process used by cloth workers in medieval times, this clay has been used for centuries to remove oils and impurities from fabrics and skin. It was historically applied as a poultice for skin conditions and oil absorption in traditional European skincare.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR