Is Isobutyl Polysilsesquioxane safe in cosmetics?
Isobutyl Polysilsesquioxane has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.
Excellent
Cosmetic Ingredient
Isobutyl Polysilsesquioxane
INCI: ISOBUTYL POLYSILSESQUIOXANE
Isobutyl Polysilsesquioxane (CAS Polymeric — no single CAS (polymer of isobutyltrialkoxysilane hydrolysis/condensation) [^1_6]) is a cosmetic cosmetic ingredient functioning as Film former, opacifying agent, nail conditioning agent. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
Polymeric — no single CAS (polymer of isobutyltrialkoxysilane hydrolysis/condensation) [^1_6]
View industrial chemical safety profile →
Function
Film former, opacifying agent, nail conditioning agent
Safety Rating
EXCELLENT
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted — reported in VCRP; CIR reviewed and cleared
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Isobutyl Polysilsesquioxane.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for Isobutyl Polysilsesquioxane.
Frequently Asked Questions
Is Isobutyl Polysilsesquioxane allowed in the EU?
Isobutyl Polysilsesquioxane EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Isobutyl Polysilsesquioxane do in cosmetics?
Isobutyl Polysilsesquioxane functions as: Film former, opacifying agent, nail conditioning agent. It is classified as a cosmetic ingredient in our database. CAS number: Polymeric — no single CAS (polymer of isobutyltrialkoxysilane hydrolysis/condensation) [^1_6].
Compliance Tools
Check Isobutyl Polysilsesquioxane compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
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Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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Is Isobutyl Polysilsesquioxane in Your Products?
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