A colloidal clay that absorbs and thickens.
What it is
Bentonite is a colloidal clay consisting mainly of montmorillonite. CosIng lists it as absorbent, bulking, emulsion stabilising and viscosity controlling. In the EU it is also listed in Annex IV (allowed colorants).
Where it is used
Found in clay masks, cleansers, dry shampoos, deodorants, powders and some creams, where it absorbs oil and thickens the formula.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
See the EU regulation section for the applicable limits. Clays from different deposits can differ in composition; the INCI name does not show the source.
Functions
- Absorbent
- Taking up water- and/or oil-soluble (dissolved or finely dispersed) substances.
- Bulking
- Non-reactive (chemically inert), solid ingredients that dilute other solids and/or increase the volume of cosmetic products.
- Emulsion stabilising
- Helping the process of emulsification and improving emulsion stability and shelf-life.
- Viscosity controlling
- Increasing or decreasing the viscosity (thickness) of cosmetics.
EU regulation
EU · Annex IV, entry 119Natural hydrated aluminium silicate, Al2O3.2SiO2.2H2O, containing calcium, magnesium or iron carbonates, ferric hydroxide, quartz-sand, mica, etc. as impurities
- As of
- 3 November 2026 · (EC) 2009/1223
Products with this ingredient (88)
- Greek Yoghurt Hydration Recharge Sheet Mask · KORRES
- Dove Renewing Glow Body wash · Dove
- Stylo à sourcils et yeux multi-usages · Inglot
- INGLOT Multi-Use Augen- & Brauenstift · Inglot
- Multi-Use Brow & Eye Pen · Inglot
- Lakier hybrydowy Cat Eye Illusion No. 1 Didier Lab, 6 ml · Didier Lab
- Lakier hybrydowy Cat Eye Illusion No. 2 Didier Lab, 6 ml · Didier Lab
- Lakier hybrydowy Cat Eye Illusion No. 3 Didier Lab, 6 ml · Didier Lab
- Lakier hybrydowy Cat Eye Illusion No. 4 Didier Lab, 6 ml · Didier Lab
- Lakier hybrydowy Cat Eye Illusion No. 5 Didier Lab, 6 ml · Didier Lab
- Vitalizing Eye Cream · BABOR
- Vitalizing Cream · BABOR

