Ingredient glossary

Bentonite

INCI: Bentonite · Also: Montmorillonite Clay

Decent support

A reasonable supporting ingredient. It helps a formula without being the star.

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What it does

  • oil absorption
  • mattifying
  • detox claims

weak evidenceDermatologic and cosmetic reviews confirm strong absorption capacity and sebum reduction yet dispel detox claims and note risk of barrier dehydration when masks are left on too long or used frequently.

Who it's for, and who should skip it

Tends to suit

  • oily
  • combo
  • acne prone

Approach with care

  • very dry
  • compromised barrier
  • rosacea
  • Clogs poresLow
  • Irritation riskLow

Plays well with

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Educational information about a cosmetic ingredient, not medical advice.