Cetearyl Isononanoate
Ingredient Info
Cetearyl isononanoate is a lightweight emollient and texture enhancer derived from plant-based sources. It's commonly used in moisturizers, sunscreens, and other skincare products to create a smooth, non-greasy feel and improve product spreadability on skin.
Benefits
- Provides lightweight moisturization without a heavy or oily residue
- Improves texture and ease of application in formulas
- Helps products spread evenly across the skin
Potential concerns
- Documented cases of allergic contact dermatitis in sensitive individuals, including systemic reactions in rare cases
- May be an underestimated allergen — reactions have been reported across multiple studies since 2003
- Not suitable for those with known sensitivity to this ingredient
Science: Multiple peer-reviewed case reports document allergic contact dermatitis and systemic reactions to cetearyl isononanoate in sunscreens and skincare products. One recent study suggests it may function as a carbon source for skin probiotics to support collagen production, though this research is preliminary and not yet widely validated in consumer applications.
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