Science
Mechanism of Action
STEARETH-2 functions by reducing the surface tension between immiscible phases, acting as a crucial emulsifier to create and maintain stable oil-in-water or water-in-oil emulsions, preventing product separation. As a surfactant, it improves the wetting properties of formulations, aiding in the even distribution of ingredients on the skin and assisting in the removal of surface impurities during cleansing. It also contributes to the desirable smooth and soft texture of cosmetic products.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
STEARETH-2 demonstrates remarkable stability across a broad pH range, exhibiting resistance to both strong acidic and alkaline conditions. This inherent stability facilitates the creation of robust emulsions that maintain their integrity over time, even in challenging formulation environments.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed STEARETH-2 as safe for use in cosmetic products at concentrations up to 10%, contingent on non-irritating formulation. Concerns regarding the byproduct 1,4-dioxane are mitigated through purification processes. Comprehensive testing indicates STEARETH-2 is neither a primary irritant nor a sensitizer to human skin. While concentrations up to 60% in water showed mild eye irritation, it exhibited only mild irritation when integrated into cosmetic formulations. It is approved for use by major regulatory bodies, including the FDA in the USA and the European Commission in the EU.
Your Skin
Skin Compatibility
Our Assessment
Verdict
STEARETH-2 is a valuable ingredient due to its effective emulsifying and surfactant capabilities, which significantly contribute to product stability, texture, and cleansing performance across a wide array of cosmetic applications, demonstrating a low risk profile for skin.
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References
Sources