Science
Mechanism of Action
This ingredient functions by physically filling the microscopic gaps between corneocytes, the dead skin cells, thereby creating a smoother surface. Upon application, it establishes a fine, breathable film on the skin, which is crucial for sealing in moisture and significantly reducing transepidermal water loss (TEWL). This action not only supports the integrity of the skin's lipid barrier but also provides a protective layer against external aggressors like allergens and irritants. In formulations, its long-chain structure aids in controlling viscosity, enhancing product body and optimizing spreadability.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Stearyl Stearate exhibits robust chemical and thermal stability, making it a reliable component in a wide array of cosmetic formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Stearyl Stearate safe for cosmetic applications, basing its conclusion on comprehensive safety data for related alkyl esters. This safety profile assumes non-irritating formulation. The FDA has also approved its use as an indirect food additive in certain packaging materials, further supporting its safety. Its use in European markets is permissible under the EU Cosmetics Regulation, particularly when plant-derived.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Stearyl Stearate is a valuable ingredient, offering reliable emollient and moisturizing benefits across all skin types, with a strong safety profile and low risk of irritation or comedogenicity.
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References
Sources