Science
Mechanism of Action
This ingredient operates by significantly reducing the surface tension between immiscible phases, such as oil and water. This action allows for the creation and stabilization of emulsions, enabling otherwise separated components to mix uniformly. It can form both water-in-oil and oil-in-water emulsions, and its molecular structure also imparts conditioning effects on surfaces.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
No data available to suggest dusting of this ingredient.
The Formula
Formulation
Stability
While a specific optimal pH range for Isosteareth-2 Phosphate is not defined, related trialkyl phosphates demonstrate robust stability, even in highly alkaline environments, with certain structural exceptions.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed Isosteareth-2 Phosphate, alongside 27 other alkyl phosphates, safe under current conditions of use and concentration, provided formulations are non-irritating. The Panel highlighted a potential for ocular or dermal irritation if products are not appropriately formulated. Specific maximum concentrations for Isosteareth-2 Phosphate were not detailed; however, other alkyl phosphates have been used in concentrations up to 8.3% in mascaras and 3.8% in face/neck preparations. No direct FDA cosmetic approval is typically required for cosmetic ingredients before market introduction.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isosteareth-2 Phosphate is a valuable formulation aid, primarily as an emulsifier and surfactant, assessed as safe by CIR when properly formulated to prevent irritation.
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References
Sources