CheckVegan

Is Polyphenylsilsesquioxane/Trimethylsiloxysilicate vegetarian?

Polyphenylsilsesquioxane/Trimethylsiloxysilicate

Vegetarian Vegetarian
Vegan Vegan

This ingredient is a synthetic silicone polymer produced by the hydrolysis and condensation polymerization of trimethylchlorosilane, tetraethyl orthosilicate, and phenyltrimethoxysilane, used as a film-former in cosmetics.

Also known as Silsesquioxanes, Ph, polymers with silicic acid (H4SiO4) tetra-Et ester, [(trimethylsilyl)oxy]-terminated
INCI name Polyphenylsilsesquioxane/Trimethylsiloxysilicate
CAS number 1991985-12-6
CosIng ID 95258
Last reviewed 4 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.

Report an issue