INCI name

POLYMETHYLSILSESQUIOXANE

Polymethylsilsesquioxane

Opacifyingreviewed

A silicone resin powder.

What it is

Polymethylsilsesquioxane is a silicone polymer formed by hydrolysis and condensation of methyltrimethoxysilane, usually used as fine spherical particles. CosIng lists it as an opacifier.

Where it is used

Used in powders, foundations, primers, sun care products and creams with a matte finish.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

Functions

Opacifying
Reducing transparency or translucency of cosmetics.

EU regulation

This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

Products with this ingredient (219)

Check a full ingredient list