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INGREDIENT DICTIONARY

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Bentonite Clay

INCI: Bentonite | CAS #: 1302-78-9
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Bentonite clay is an absorbent mineral used in cosmetic formulations for oil control and structuring.

What is Bentonite Clay & why is it used?

It is used to absorb oil, improve cleansing, and provide structure in mask and treatment formulations.

 

QUALITY MATTERS

Why specification quality matters

Cosmetic-grade bentonite clay with high purity and controlled microbiological profile, supporting consistent formulation performance. 

Solubility Insoluble - disperses in water
Primary function Additive
Use level 1.0–20.0%

Behaviour in formulations

Swells in water to create viscosity and absorb oil.

Sensory notes

Bentonite clay creates a dense, structured texture with a matte finish on the skin. It can feel tightening as it dries.

Formulation considerations

PROCESSING

Disperse slowly into water with mixing to avoid clumping. Allow time for full hydration before further processing.

COMPATIBILITY

Compatible with most water-based systems. High electrolyte levels may affect hydration and viscosity.

pH
Not strongly pH dependent but may influence system pH slightly.
FORMULATION EXAMPLES

Face mask

  • Bentonite: 10–20%
  • Water phase
  • Humectants

Cleanser

  • Bentonite: 1–3%
  • Surfactant system

Treatment

  • Bentonite: 3–10%
  • Actives

Use level considerations

Recommended range 1.0–20.0%
Suggested starting level 5–10% for most cosmetic formulations%

Typically used at 1–20% depending on application.

Formulation summary

An absorbent clay used for oil control and structure in cosmetic formulations.

Quality notes

Cosmetic-grade bentonite clay with high purity and controlled microbiological profile, supporting consistent formulation performance. 

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