Science
Mechanism of Action
This ingredient operates as a three-dimensional siloxane polymer, forming a durable, flexible film on the skin's surface. Its hybrid structure, combining inorganic and organic components, allows it to serve multiple roles, including aiding as a dispersant to integrate diverse polymer systems within water-containing emulsions and modulating viscosity for improved product feel and stability.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polysilsesquioxane resins are stable in typical cosmetic formulations. While they can be cured at elevated temperatures, optimal formulation and catalysis are generally achieved at or below room temperature. Curing can be expedited by catalysts such as titanates or zinc-based compounds.
Synergies
- Polymer/copolymer systems in water-containing emulsions (as a dispersant)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Acryloyloxypropyl Polysilsesquioxane, alongside 17 related polysilsesquioxane ingredients, is safe for use in cosmetics. Although specific maximum concentrations for this exact ingredient were not provided, other polysilsesquioxanes within this group have been safely used in concentrations reaching up to 55.2% in certain makeup preparations. Human Repeat Insult Patch Tests (HRIPTs) demonstrate a low potential for irritation or sensitization.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Acryloyloxypropyl Polysilsesquioxane is a safe and versatile ingredient, valuable for its multi-functional role in enhancing product texture, stability, and aesthetic performance through film-forming and rheology modification.
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References
Sources