A sun filter stabilizer with antioxidant action. It holds UV filters in light and protects the formula from oxidation. Well tolerated.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A functional filter stabilizer. Safe.
Diethylhexyl Syringylidenemalonate is a synthetic antioxidant and stabilizer known by the trade name Oxynex ST. INCI: Diethylhexyl Syringylidenemalonate. In a formula it protects other components from oxidation, extends their stability, and supports the photostability of ultraviolet filters in sunscreens. It is a functional antioxidant for the formula itself rather than a skincare active for skin. It helps the product keep its properties longer. Pregnancy safety. Systemic absorption through intact skin is low and there is no evidence of harm. It can be used during pregnancy and lactation. Tolerance. Irritation and allergen potential are low, suitable for sensitive skin.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Diethylhexyl Syringylidenemalonate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Diethylhexyl Syringylidenemalonate suits: normal, dry, combination, oily, sensitive.
A sun filter stabilizer with antioxidant action.
The INCI name is Diethylhexyl Syringylidenemalonate. It may also appear as: Диэтилгексил сирингилиденмалонат, Oxynex ST.
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