Polydimethylsiloxane/Polymethysilesquioxane Copolymer

What is Polydimethylsiloxane/Polymethysilesquioxane Copolymer?

Polydimethylsiloxane/Polymethylsilsesquioxane Copolymer is a synthetic organosilicon compound formed by combining polydimethylsiloxane, a linear silicone chain, with polymethylsilsesquioxane, a three-dimensional cage-like silicone structure. This crosspolymer belongs to the silicone family widely used in cosmetics, particularly in makeup foundations, primers, and powders. It functions as a film-forming agent that creates a flexible, breathable barrier on the skin, helping to absorb excess sebum while providing a soft-focus blur to minimize the appearance of pores and fine lines. Its unique hybrid structure delivers a lightweight, non-greasy matte texture, enhancing product spreadability and longevity without compromising skin comfort. Typically incorporated at low levels, it improves sensory feel and wear performance in formulations.

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

Benefits

Provides a soft-focus effect to blur imperfections.

Offers oil-absorbing properties for a matte finish.

Enhances product smoothness and long wear.

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 with oily or combination skin seeking matte products.
Individuals with rare silicone sensitivities.
Makeup users wanting improved blendability and longevity.
People preferring silicone-free formulations.
Those preferring lightweight, non-greasy textures.
Those experiencing issues with film-forming ingredients.

Safety Notes

  • Rated low hazard by safety assessments.
  • Non-comedogenic with minimal irritation potential.

Frequently Asked Questions about Polydimethylsiloxane/Polymethysilesquioxane Copolymer

What does this ingredient do in products?

It forms a breathable film for matte texture, oil absorption, and soft-focus effects.

Is it safe for daily use?

Safety evaluations indicate low hazard and suitability for cosmetic use.

Does it clog pores?

It has a comedogenic rating of zero, making it non-pore-clogging.