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TRIMETHYLSILOXYSILICATE/DIMETHICONE CROSSPOLYMER.

Valuable / ANTIFOAMING

TRIMETHYLSILOXYSILICATE/DIMETHICONE CROSSPOLYMER is a specialized silicone polymer that forms a breathable film on the skin, creating a protective barrier and enhancing product longevity. It significantly improves the tactile experience of formulations, delivering a smooth, non-tacky finish.

Summary

Film-forming Viscosity controlling Emulsion stabilising Slip modifier Skin-conditioning agent - emollient

Science

Mechanism of Action

This ingredient operates by forming a breathable, permeable polymeric film on the skin's surface. This film acts as a vital protective barrier, minimizing moisture loss (transepidermal water loss) and guarding against environmental irritants. Beyond its barrier benefits, it enhances product aesthetics by improving texture, spreadability, and slip, resulting in a refined and smooth skin feel. It can also temporarily diminish the appearance of fine lines and wrinkles for a smoother skin canvas. Furthermore, it demonstrates an ability to absorb excess oil and sebum. In formulation chemistry, it functions as a thickening agent and stabilizes emulsions, particularly within non-aqueous systems.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

While specific optimal pH parameters for TRIMETHYLSILOXYSILICATE/DIMETHICONE CROSSPOLYMER are not explicitly provided, a pH of 7.0 has been noted for related Dimethicone Crosspolymers. A related Vinyldimethyl/trimethylsiloxysilicate stearyl dimethicone crosspolymer, at a 20% concentration in isododecane, has shown stability for at least one year under standard storage conditions.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
46%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed TRIMETHYLSILOXYSILICATE/DIMETHICONE CROSSPOLYMER, along with 61 other dimethicone crosspolymers, and determined it is safe for use in cosmetic applications at concentrations up to 46%. Due to its substantial molecular weight, significant dermal absorption is considered unlikely. Components such as Dimethiconol have demonstrated no eye or dermal irritation or sensitization at cosmetic concentrations. The ingredient is generally recognized as non-toxic, non-irritating, and non-comedogenic. However, some products containing this ingredient may require specific use restrictions or warnings, based on EWG reviews, due to the potential presence of impurities like Cyclopentasiloxane and Cyclotetrasiloxane.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

TRIMETHYLSILOXYSILICATE/DIMETHICONE CROSSPOLYMER is a valuable multifunctional ingredient, enhancing skin barrier function and sensory experience while providing formulation stability, deemed safe for use up to 46%.

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