Trimethylsiloxysilicate/Dimethiconol Crosspolymer

What is Trimethylsiloxysilicate/Dimethiconol Crosspolymer?

Trimethylsiloxysilicate/Dimethiconol Crosspolymer is a synthetic crosspolymer made by linking trimethylsiloxysilicate, a rigid silicone resin, with dimethiconol, a soft, high-viscosity silicone gum. This structure yields a flexible, elastic polymer widely used in color cosmetics, sunscreens, and hair care products. It works by depositing a thin, continuous film on skin or hair, providing water repellency, adhesion, and durability while allowing moisture vapor transmission. As a viscosity controller, it thickens formulas to enhance spreadability, suspend particles, and maintain stability across various textures like creams, gels, and sprays. Commonly featured in foundations, mascaras, and styling aids, it supports non-greasy, matte finishes without heaviness. Its chemical stability ensures consistent performance in challenging conditions.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Creates durable, water-resistant films for extended product wear on skin and hair.

Enhances formula thickness for better texture, application, and product stability.

Supports non-comedogenic properties, minimizing pore-clogging potential.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People using long-wear makeup for all-day hold.
Those with rare silicone sensitivities.
Individuals with oily skin seeking matte, stable formulations.
People preferring silicone-free cosmetics.
Users of sunscreens or hair products needing water resistance.
Individuals experiencing contact reactions to silicone polymers.

Safety Notes

  • Low hazard profile with minimal irritation risk in cosmetic use.
  • Non-comedogenic rating of 0 indicates low pore-clogging likelihood.

Frequently Asked Questions about Trimethylsiloxysilicate/Dimethiconol Crosspolymer

What does this crosspolymer do in products?

It forms flexible films for water resistance and controls viscosity for smooth, stable textures.

Is it suitable for acne-prone skin?

Yes, with a comedogenic rating of 0, it poses low risk of clogging pores.

How safe is it for daily use?

Low hazard rating and non-irritating profile make it appropriate for most cosmetic applications.