Science
Mechanism of Action
This ingredient functions by forming a lightweight, breathable film on the skin's surface, attributed to its complex structure of three-dimensional siloxane polymers and oligomers. This film helps to condition the skin and improve its texture. Furthermore, it possesses a unique ability to cleanse the skin without disrupting the stratum corneum's surface tension, providing a non-foaming, mild cleansing effect.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed the primary components, Trimethylpentyl Polysilsesquioxane and Methoxy PEG-10 Polysilsesquioxane, concluding they are safe for use in cosmetics under current practices. While it is a PEG compound, and thus carries a general concern regarding potential impurities like ethylene oxide and 1,4-dioxane, its safety is contingent on the purity of the raw material. This ingredient is not restricted from use under European Union cosmetic regulations. Related components have shown very low irritancy, with a Primary Irritation Index (PII) of 0.40 for Methoxy PEG-10 Polysilsesquioxane (100%) and 0.30 for Trimethylpentyl Polysilsesquioxane (100%).
Your Skin
Skin Compatibility
Our Assessment
Verdict
This polysilsesquioxane is a valuable ingredient, offering gentle cleansing, effective film-forming, and skin conditioning benefits across all skin types, supported by a strong safety profile and low irritation potential.
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References
Sources