Didecyldimonium Chloride

Didecyldimonium chloride is a quaternary ammonium compound used in personal care formulations. Cosmetics use it as a preservative and antimicrobial to limit contamination, though irritation potential and sensory drawbacks keep its value only fair.
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Ingredient Snapshot

Overview
A preservative that fights microbes but can irritate sensitive skin.
Category
Skin Conditioning
Type
Surfactant

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Helps keep products fresher by discouraging spoilage from microbes, though it can bother sensitive skin.

Uses In Skincare & Cosmetics

Used at low levels in shampoos, hand washes, and some lotions as a preservation aid within the formula.

Comedogenic Rating

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

Safety

Can irritate skin, eyes, and mucosa, particularly on sensitive or compromised skin and around eyes. Typically used at low concentrations; avoid contact with eyes and broken skin. Discontinue use if persistent irritation occurs.

Is Didecyldimonium Chloride a Good Ingredient?

Rated Fair: effective as an antimicrobial/preservative, but its cationic surfactant nature raises irritation potential, especially in leave-ons. The benefit-to-sensitivity trade-off limits overall desirability.

Products with Didecyldimonium Chloride

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