Science
Mechanism of Action
This ingredient operates by reducing the surface tension between immiscible phases, such as oil and water, thereby forming and stabilizing emulsions. It also functions as a solubilizer, integrating components that would not typically dissolve, and aids in cleansing by emulsifying oils and dirt for efficient removal. Additionally, it serves as a hydrophilic liquid thickener and viscosity modifier, optimizing formulation rheology.
Research
Clinical Evidence
High confidence0.5% to 3%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PEG-160 SORBITAN TRIISOSTEARATE exhibits inherent pH stability within a range of 6.5 to 8.5. It provides robust stability across a wide pH spectrum in formulations and does not inherently influence formula viscosity at varying pH levels. It is recognized as an efficient viscosity builder for surfactant-based solutions, demonstrating particular utility in sulfate-free systems, and can be incorporated during cold processing.
Synergies
- Sulfate-free surfactant systems
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG-160 SORBITAN TRIISOSTEARATE and related esters safe for cosmetic use when formulated to be non-irritating. While ethoxylation by-products like Ethylene Oxide and 1,4-Dioxane are potential concerns, these can be effectively managed through appropriate purification during manufacturing. Comprehensive reviews confirm its low acute and chronic toxicities, negligible ocular or dermal irritation on healthy skin, and non-sensitizing properties. The FDA also acknowledges its safety for certain food applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-160 SORBITAN TRIISOSTEARATE is a valuable, multifunctional ingredient, highly effective as an emulsifier, solubilizer, and viscosity modifier, with a strong safety profile across various skin types.
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