Trimethylsiloxy/Polymethylsilsesquioxane
INCI: TRIMETHYLSILOXY/POLYMETHYLSILSESQUIOXANE
Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Inhalation exposure concern mitigated by large particle sizes (60–80 µm); data insufficient for airbrush delivery
Frequently Asked Questions
Is Trimethylsiloxy/Polymethylsilsesquioxane safe in cosmetics?
Inhalation exposure concern mitigated by large particle sizes (60–80 µm); data insufficient for airbrush delivery The EU classifies Trimethylsiloxy/Polymethylsilsesquioxane as "permitted". Safety rating: GOOD.
Is Trimethylsiloxy/Polymethylsilsesquioxane allowed in the EU?
Trimethylsiloxy/Polymethylsilsesquioxane EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Trimethylsiloxy/Polymethylsilsesquioxane do in cosmetics?
Trimethylsiloxy/Polymethylsilsesquioxane functions as: Anticaking, Binding, Skin Conditioning, Emollient. It is classified as a cosmetic ingredient in our database. CAS number: Not definitively assigned as a single CAS; base component polymethylsilsesquioxane is 68554-70-1.
What is the Margin of Safety for Trimethylsiloxy/Polymethylsilsesquioxane?
adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
Compliance Tools
Check Trimethylsiloxy/Polymethylsilsesquioxane compliance across multiple jurisdictions:
Related Ingredients
Is Trimethylsiloxy/Polymethylsilsesquioxane in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Trimethylsiloxy/Polymethylsilsesquioxane in your formulation.