Science
Mechanism of Action
Operating as an advanced film-former, TRIMETHYLSILOXYSILICATE/DIMETHICONOL CROSSPOLYMER establishes a continuous, flexible, and exceptionally durable hydrophobic barrier on the skin. This sophisticated matrix significantly reduces transepidermal water loss and shields against external aggressors such as chemicals, UV radiation, and pollutants. Its unique architecture contributes to superior water, sebum, rub-off, and transfer resistance, thereby extending the wear time of cosmetic formulations. Importantly, this film maintains breathability, allowing for water vapor permeation, and imparts a non-tacky finish. Furthermore, it functions as a non-aqueous rheology modifier, optimizing formulation stability and texture.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While generally resistant to oxidation, hydrolysis, and UV degradation, this crosspolymer should be stored away from strong acids, bases, strong oxidizing agents, and reactive chemicals to maintain its integrity.
Conflicts
- strong acids
- strong bases
- strong oxidizing agents
- reactive chemicals
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that TRIMETHYLSILOXYSILICATE/DIMETHICONOL CROSSPOLYMER is safe for use in cosmetics, citing its large molecular weight which suggests minimal to no skin absorption. Studies indicated no significant eye irritation, dermal irritation, or sensitization at typical cosmetic concentrations. Although one component, Trimethylsiloxysilicate, has been mentioned as potentially comedogenic, the overall crosspolymer is listed as 'Irritant Free' and 'Oil Free' by SkinSAFE. Additionally, EWG rates the ingredient with low concern for general toxicity, including cancer and reproductive toxicity, further supporting its safety profile.
Your Skin
Skin Compatibility
Our Assessment
Verdict
TRIMETHYLSILOXYSILICATE/DIMETHICONOL CROSSPOLYMER is a valuable film-forming ingredient that enhances product longevity and skin protection while maintaining a non-tacky feel.
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