Diethylhexyl Syringylidenemalonate

Diethylhexyl Syringylidenemalonate is an oil-soluble phenolic antioxidant used in cosmetic formulations. It boosts photostability of formulas, reduces oxidation of oils and pigments, and supports the performance of UV filter blends.
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Ingredient Snapshot

Overview
An antioxidant that helps formulas resist light and air damage.
Category
Antioxidant
Type
Antioxidant

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Helps products resist light- and air-triggered degradation, supporting fresher texture and color over time. May aid in maintaining the performance of UV-filter blends, though it is not a sunscreen on its own.

Uses In Skincare & Cosmetics

Often incorporated into sunscreens and facial oils to slow formula breakdown. Also used in lipsticks and fluid foundations to reduce rancid smells and color shift.

Comedogenic Rating

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

Safety

Used at low levels and is not a sunscreen; some users may experience mild stinging or irritation, especially in leave-on sunscreens or oils. Patch testing is prudent for sensitive skin. No widely recognized regulatory restrictions.

Is Diethylhexyl Syringylidenemalonate a Good Ingredient?

Rated Fair as its main value is formula photostability and oxidation control, while direct skin benefits have limited independent clinical support. Phenolic antioxidants can pose a mild irritation or sensitization risk for reactive skin.

Products with Diethylhexyl Syringylidenemalonate

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