Polymethylsilsesquioxane

The Basics On Polymethylsilsesquioxane

What is Polymethylsilsesquioxane?

A polymer formed from the condensation and hydrolysis of the silicone methyltrimethoxysilane.

What are other names for Polymethylsilsesquioxane?

POLYMETHYLSILSESQUIOXANE

What is Polymethylsilsesquioxane used for?

Functions: Polymethylsilsesquioxane is a silicone ingredient used in many skin care, hair care, and cosmetic formulas, most often as a film former that creates a lubricating, smooth, silky feel and increases the skin or hair’s ability to repel water, according to Marshall Brain, the founder of How Stuff Works.

How Polymethylsilsesquioxane is classified

Silicones, Emollients, Texture Enhancer

Recommendations for using Polymethylsilsesquioxane during pregnancy and breastfeeding

Limited data suggests no known risk

 

Polymethylsilsesquioxane During Pregnancy

What we know about using Polymethylsilsesquioxane while pregnant or breastfeeding

Limited information available.

Data on the DART of polysilsesquioxane ingredients were not found in the published literature and no unpublished data were submitted.

General safety info about Polymethylsilsesquioxane from CIR

The Cosmetic Ingredient Review (CIR) Expert Panel assessed the safety of 18 polysilsesquioxane ingredients as used in cosmetics. The majority of the ingredients named in this assessment have several functions, with most reported to function as film formers, opacifying agents, and nail conditioning agents. The Panel reviewed relevant data related to these ingredients. The CIR Expert Panel concluded that these polysilsesquioxanes are safe in cosmetics in the present practices of use and concentration described in this safety assessment.

Use this, not that!

Products where you might find Polymethylsilsesquioxane

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