Is Isobutylene/Styrene Copolymer safe in cosmetics?
Isobutylene/Styrene Copolymer has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Isobutylene/Styrene Copolymer
INCI: ISOBUTYLENE/STYRENE COPOLYMER
Isobutylene/Styrene Copolymer (CAS 9011-12-5 [^1_15][^1_16]) is a cosmetic cosmetic ingredient functioning as Film former; viscosity controlling; thickener/stabilizer. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 9011-12-5 [^1_15][^1_16] →
Auto-generated CPSR Part A draft with source citations
Function
Film former; viscosity controlling; thickener/stabilizer
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted — CIR concluded safe at ≤1% in leave-on products; Health Canada approved as non-medicinal film former
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Isobutylene/Styrene Copolymer.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for Isobutylene/Styrene Copolymer.
Frequently Asked Questions
Is Isobutylene/Styrene Copolymer allowed in the EU?
Isobutylene/Styrene Copolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Isobutylene/Styrene Copolymer do in cosmetics?
Isobutylene/Styrene Copolymer functions as: Film former; viscosity controlling; thickener/stabilizer. It is classified as a cosmetic ingredient in our database. CAS number: 9011-12-5 [^1_15][^1_16].
Compliance Tools
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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