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Bentonite Clay
AKA “Bentonite, Clay, Montmorillonite, Bentonite Powder”
Ingredient
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Ingredient Facts
Bentonite clay
AKA: Montmorillonite, Bentonite Powder
Ingredient · Absorbent · EWG: 4
Synthetic
Clay
Not Clean
Bentonite Clay is a cosmetic ingredient.
CAS #
1302-78-9
Form
Powder
State
Solid
See origin →
Functions
Absorbent
Absorbs Excess Oil
Adds Body & Volume
Stabilizes Emulsion
Controls Viscosity
Locks In Moisture
Wound Healing
Adds volume
Keeps product blended
Controls product thickness
Traditional Use
See bentonite—this is the same ingredient. Historically used in spa and skincare treatments across cultures for its absorbent properties and mineral content.
Skin Types
●all-skin-types
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
3 Piece Classic Suncare Travel Set
COOLA
 →
Clearing Mask
Indie Lee
 →
Detox & Clarify Collection
Goldfaden MD
 →
Dutch Dirt Mask
Bloom Effects
 →
Facial Detox
Goldfaden MD
 →
Zinc Oxide Sunscreen Spray - Mineral
COOLA
 →
Ready, Set, Smooth
Goldfaden MD
 →
Complexion Boost
Saie
 →
Slip Tint™ Undetectable Baked Setting Powder
Saie
 →
Sun Melt
Saie
 →
Toasty Fall Bundle
Saie
 →
SuperSuede™ Baked Powder Blush
Saie
 →
SuperSuede™ Radiant Baked Bronzer
Saie
 →
The Blush Stack
Saie
 →
The SuperSuede™ Stack
Saie
 →
Skin Renewal Mask (75mL)
Grown Alchemist
 →
Double Polishing Peel
Alpyn Beauty
 →
The Radiance Ritual
Alpyn Beauty
 →
I-Waken Resurfacing Mask
Indie Lee
 →
Think Deep Pore Minimizing Detox Mask with Pomegranate + Charcoal
LYS Beauty
 →
Atmosphere Protection®Cream
OSEA
 →
Atmosphere Protection®Cream - 0.6 fl oz
OSEA
 →
Glucosamine.
T S Barclay, C Tsourounis, G M McCart
The Annals of pharmacotherapy, 1998
→
Fibrous Clays in Dermopharmaceutical and Cosmetic Applications: Traditional and Emerging Perspectives.
Cao L, Xie W, Cui H, Xiong Z, Tang Y et al.
International journal of pharmaceutics, 2022
→
Fibrous Clays in Dermopharmaceutical and Cosmetic Applications: Traditional and Emerging Perspectives.
Cao L, Xie W, Cui H, Xiong Z, Tang Y et al.
International journal of pharmaceutics, 2022
→
Fibrous Clays in Dermopharmaceutical and Cosmetic Applications: Traditional and Emerging Perspectives.
Cao L, Xie W, Cui H, Xiong Z, Tang Y et al.
International journal of pharmaceutics, 2022
→
Quaternium-18 and Quaternium-18 Bentonite.
Cherian P, Bergfeld WF, Belsito DV, Klaassen CD, Liebler DC et al.
International journal of toxicology, 2023
→
Quaternium-18 and Quaternium-18 Bentonite.
Cherian P, Bergfeld WF, Belsito DV, Klaassen CD, Liebler DC et al.
International journal of toxicology, 2023
→
Quaternium-18 and Quaternium-18 Bentonite.
Cherian P, Bergfeld WF, Belsito DV, Klaassen CD, Liebler DC et al.
International journal of toxicology, 2023
→
Final Report on the Safety Assessment of Quaternium-18, Quaternium-18 Hectorite, and Quaternium-18 Bentonite
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report: Amended Safety Assessment Naturally-Sourced Clays as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report: Safety Assessment of Alkonium Clays as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Quaternium-18 and Quaternium-18 Bentonite
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
bentonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Benzalkonium Montmorillonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Clay
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogenated Tallowalkonium Bentonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Montmorillonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Quaternium-18 Bentonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Quaternium-18/Benzalkonium Bentonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Quaternium-90 Bentonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Stearalkonium Bentonite
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Bentonite Clay: A Potential Natural Sanitizer for Prevent...
Partha Das, Bharat Venkata Tadikonda
ACS chemical neuroscience, 2020
→
Bentonite Clay: A Potential Natural Sanitizer for Prevent...
Partha Das, Bharat Venkata Tadikonda
ACS chemical neuroscience, 2020
→
Bentonite Clay: A Potential Natural Sanitizer for Prevent...
Partha Das, Bharat Venkata Tadikonda
ACS chemical neuroscience, 2020
→
bentonite
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Clay
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
French Green Clay
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Kaolin Clay
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Montmorillonite
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Quaternium-18 Bentonite
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Quaternium-90 Bentonite
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Stearalkonium Bentonite
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
White Clay Powder
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Polyacrylate crosspolymer-11 enhances soil clay dispersibility: An indication for inadvertent environmental impacts from personal care and cosmetic in
Nguyen LN, Nguyen AM, Nguyen MT, Dinh VM, Mai NT et al.
The Science of the total environment, 2022
→
Polyacrylate crosspolymer-11 enhances soil clay dispersibility: An indication for inadvertent environmental impacts from personal care and cosmetic in
Nguyen LN, Nguyen AM, Nguyen MT, Dinh VM, Mai NT et al.
The Science of the total environment, 2022
→
Polyacrylate crosspolymer-11 enhances soil clay dispersibility: An indication for inadvertent environmental impacts from personal care and cosmetic in
Nguyen LN, Nguyen AM, Nguyen MT, Dinh VM, Mai NT et al.
The Science of the total environment, 2022
→
Natural and ion-exchanged illite clays reduce bacterial burden and inflammation in cutaneous meticillin-resistant Staphylococcus aureus infections in
Otto CC, Kilbourne J, Haydel SE
Journal of medical microbiology, 2016
→
Injectable nanoclay gels for angiogenesis.
Page DJ, Clarkin CE, Mani R, Khan NA, Dawson JI et al.
Acta biomaterialia, 2019
→
Bentonite in Korea: A Resource and Research Focus for Biomedical and Cosmetic Industries.
Rana MS, Kim S
Materials (Basel, Switzerland), 2024
→
Clays and Wound Healing.
Tian G, Wang Z, Huang Z, Xie Z, Xia L et al.
Materials (Basel, Switzerland), 2024
→
Verified Jun 2026
Data: CosIng · EWG · CIR