Science
Mechanism of Action
This ingredient operates by reducing the surface tension between immiscible liquids, facilitating the formation and stabilization of emulsions. As a surfactant, it helps suspend and remove dirt and oils from the skin. Beyond its primary roles, it can enhance product texture and performance by acting as a solubilizer, lubricant, softener, and antistatic agent, with a potential to contribute to overall skin conditioning.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Related phosphate ingredients exhibit robust stability across a broad pH range, specifically between 3 and 9. Its water solubility can be enhanced with increasing pH (neutralization), ensuring effective emulsification even at the skin's normal pH.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Steareth ingredients, including Steareth-3, are safe when formulated to be non-irritating. Rigorous purification steps are essential to control minute levels of 1,4-dioxane, a by-product of the ethoxylation process. This ingredient adheres to FDA regulations for indirect food additives in textiles and is generally permissible in European cosmetic markets.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Steareth-3 Phosphate is a valuable formulation aid, primarily serving as an emulsifier and surfactant, broadly compatible with various skin types when correctly formulated to ensure minimal irritancy.
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References
Sources