Science
Mechanism of Action
This ingredient operates by leveraging its amphiphilic structure, possessing both lipophilic (oil-attracting) and hydrophilic (water-attracting) components. This allows it to effectively reduce the interfacial tension between disparate phases, thereby creating and stabilizing emulsions. In cleansing products, it efficiently encapsulates oily impurities and dirt, enabling their removal upon rinsing. Furthermore, the butylene glycol moiety imparts humectant action, drawing hydration into the epidermal layers, and offers emollient effects that help prevent transepidermal water loss. Its solvent capabilities can also enhance the percutaneous absorption of other active compounds.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient maintains stability when stored at room temperature, protected from direct sunlight and excessive heat, offering a shelf life of approximately 2 years.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that this class of ingredients is safe for use in cosmetic formulations, provided concentrations do not exceed 10%. However, based on evidence of kidney damage and sensitization reactions observed in burn patients, PEG-10 Butylene Glycol Isostearate must not be applied to compromised or damaged skin. Additionally, its petrochemical origin and the potential for 1,4-dioxane contamination preclude its use in certified organic cosmetics.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-10 Butylene Glycol Isostearate is a valuable emulsifier and surfactant, offering supplementary humectant and emollient benefits, though its application should be strictly avoided on damaged skin.
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