Fuller's Earth
AKA “fuller's earth clay, montmorillonite clay
Ingredient
Ingredient Facts
Fuller's earth
AKA: Fuller's earth clay, Montmorillonite clay
Ingredient · Abrasive · EWG: 4
Synthetic
Clay
Not Clean
English Fullers Earth,Solum Fullonum (EU)
CAS #
8031-18-3
Form
Powder
See origin →
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.
Skin Types
all-skin-types
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
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
Verified Jun 2026
Data: CosIng · EWG · CIR