Science
Mechanism of Action
This ingredient functions primarily as a skin-conditioning agent and emollient, imparting a light, silky feel without greasiness. It also acts as an effective solvent and solubilizer within formulations, improving product spreadability and glide. Furthermore, it can serve as a binding or wetting agent in solid preparations such as pressed powders.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Isostearyl Benzoate is an oil-soluble liquid emollient; therefore, dusting as observed with powdered ingredients is not applicable.
The Formula
Formulation
Stability
Isostearyl Benzoate, like other long-chain alkyl benzoate esters, is an oil-soluble liquid. While no specific optimal pH range for its stability as an emollient is provided, as an ester, it may theoretically be susceptible to hydrolysis at extreme pH levels. However, detailed data on this specific ester is not available.
Conflicts
- No specific incompatibilities for Isostearyl Benzoate as an emollient were reported. However, as a general consideration for benzoate compounds, there is a theoretical risk of benzene formation, a carcinogen, when combined with pure ascorbic acid (Vitamin C), especially under conditions of heat and light exposure. This consideration, primarily noted for preservatives like sodium benzoate, should be approached with caution in formulations containing Isostearyl Benzoate.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Isostearyl Benzoate is safe for use in cosmetic products. This assessment is based on evidence indicating that it is unlikely to be absorbed systemically due to its low water solubility, and it has not been identified as an eye irritant, skin irritant, or dermal sensitizer at concentrations commonly used in cosmetics.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isostearyl Benzoate is a valuable, light, and non-greasy emollient and skin-conditioning agent, enhancing product feel and spreadability across all skin types, with a confirmed safe-as-used profile by the CIR.
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