Science
Mechanism of Action
At a molecular level, STEARETH-25 reduces interfacial tension, facilitating the dispersion of immiscible liquids to create and stabilize emulsions. As a surfactant, its amphiphilic structure enables it to effectively bind to and remove impurities from the skin and hair. It functions as a solubilizer, integrating poorly soluble ingredients into aqueous solutions, and can modify rheological properties to influence product viscosity. On the skin, it contributes to hydration and conditioning by forming an occlusive layer that minimizes transepidermal water loss.
Research
Clinical Evidence
Medium confidence0.5%
Key findings
- 01 Typical concentrations for effective emulsification and stabilization in cosmetic formulations range from 0.5% to 3%.
- 02 Higher concentrations, up to 30%, are utilized for its capacity as a gel-forming agent, creating structured, gel-like hydrates.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Exhibits stability at lower pH levels but undergoes hydrolysis at elevated pH values. It demonstrates resistance to hard water conditions.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that STEARETH ingredients, including STEARETH-25, are safe when formulated to be nonirritating. Improper formulation can lead to skin irritation. Trace amounts of 1,4-dioxane, an ethoxylation byproduct, may be present but are controlled through rigorous purification. It is permissible for use in cosmetics within the European Union's general regulatory provisions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
STEARETH-25 is a valuable, versatile emulsifier and surfactant crucial for product stability and texture, deemed safe for use when properly formulated to prevent irritation.
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