Is Isobutyl Polysilsesquioxane vegetarian?
Isobutyl Polysilsesquioxane
Isobutyl Polysilsesquioxane is a synthetic resinous material composed of three-dimensional siloxane polymers and oligomers with cage-like structures, prepared by the hydrolysis and condensation of 2-methylpropyl trimethoxysilane. It is used in cosmetics for its film-forming properties.
| Also known as | Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, 1,3,5,7,9,11,13,15-octakis(2-methylpropyl), Pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane, 1,3,5,7,9,11,13,15-octakis(2-methylpropyl)- |
|---|---|
| INCI name | Isobutyl Polysilsesquioxane |
| CAS number | 221326-46-1 |
| CosIng ID | 93230 |
| 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.
