Fuller's Earth
AKA “fuller's earth clay, montmorillonite clay
Synthetic
Ingredient Facts
Fuller's earth
AKA: Fuller's earth clay, Montmorillonite clay
Synthetic · Abrasive · EWG: 4
Synthetic
Clay
Synthetic
Clean
A natural clay that absorbs excess oil and impurities while gently exfoliating. Leaves skin feeling smooth and refined.
CAS #
8031-18-3
Form
Powder
See origin →
Functions
Abrasive
Absorbent
Bulking
Opacifying
Anticaking
Gel Forming
Anti-Inflammatory
Moisturizing
Locks in moisture to keep skin soft and supple throughout the day
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
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR