Quaternium-90 Bentonite

Quaternium-90 Bentonite is a surface-treated bentonite clay bearing quaternary ammonium groups. Formulators use it in anhydrous sticks, waxes, and emulsions to build structure, control flow, prevent pigment settling, and improve spreadability.
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Ingredient Snapshot

Overview
This clay gives sticks and balms a stable, easy-to-apply texture.
Category
Tone/Texture, Oil Control
Type
Rheology Modifier

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Gives sticks and balms a stable, cohesive feel that applies evenly, and helps color look consistent on skin while reducing greasy feel in heavier formulas.

Uses In Skincare & Cosmetics

Common in stick deodorants, balmy primers, and wax-based makeup for improved solidity, and also used in sunscreens and rich creams to boost texture and payoff.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally low irritation potential, but minor stinging or redness can occur on very sensitive skin due to the cationic surface treatment. Minimize inhalation of fine powder during manufacturing or application. No specific regulatory limits commonly cited for cosmetic use.

Is Quaternium-90 Bentonite a Good Ingredient?

Good, for dependable structure-building in anhydrous sticks and balms, aiding pigment suspension and reducing greasiness with a low likelihood of irritation. It's not Great because the benefits are primarily textural, and cationic clays can rarely trigger sensitivity in reactive skin.

Products with Quaternium-90 Bentonite

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