Trideceth-9

Trideceth-9 is a nonionic surfactant formed by adding nine ethylene oxide units to tridecyl alcohol. Cleansers and toners use it as a solubilizer and wetting agent to improve clarity, spread, and rinse-off.
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Ingredient Snapshot

Overview
Helps cleansers and toners mix oils into water for a clear, even wash.
Category
Cleansing, Emulsifying
Type
Surfactant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Supports a transparent look and even application, helping products glide comfortably, and assists in removing buildup during rinse, leaving skin feeling fresh.

Uses In Skincare & Cosmetics

Common in toners, micellar waters, and light gel cleansers to improve performance and aesthetics, and also used in makeup removers and hair cleansers for better distribution and wash-off.

Comedogenic Rating

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

Safety

Usually well tolerated, though it may cause mild irritation or eye sting at higher concentrations or with prolonged exposure. Best used in rinse-off formats; discontinue if persistent dryness or redness appears.

Is Trideceth-9 a Good Ingredient?

It rates Good because it provides effective solubilization and wetting for clear, even-textured formulas with generally mild nonionic surfactant action. It improves spread and wash-off without significant residue, but offers no treatment benefit of its own.

Products with Trideceth-9

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