Is Styrene/Isoprene Copolymer safe in cosmetics?
Styrene/Isoprene Copolymer has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Styrene/Isoprene Copolymer
Also known as: 2-Methylbuta-1,3-diene--ethenylbenzene (1/1)
INCI: STYRENE/ISOPRENE COPOLYMER
Styrene/Isoprene Copolymer (CAS 25038-32-8) is a cosmetic cosmetic ingredient functioning as Film forming, opacifying. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 25038-32-8 →
Auto-generated CPSR Part A draft with source citations
Function
Film forming, opacifying
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted; CIR: safe in present practices of use and concentration
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Styrene/Isoprene Copolymer.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
1 property record from structured ingredient metadata.
polymer
{"cas_number": "25038-32-8", "ingredient_class": "film_former/texture_modifier", "polymer_type": "synthetic_copolymer", "chemical_backbone": "styrene", "molecular_weight_Da_range": "80000-600000", "ionic_character": "nonionic", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity": "moderate", "film_…
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Adhesion/cohesion promoter
Film former
No specific technical function
Opacifer
Regulatory List Membership (1)
FDA Indirect Food Contact Additives
Expert Verdict
Expert safety assessment and concern-level summary for Styrene/Isoprene Copolymer.
Known Synonyms
2-Methylbuta-1,3-diene--ethenylbenzene (1/1)
Chemical Function
Film former
Opacifer
No specific technical function
Adhesion/cohesion promoter
Regulatory Lists
Indirect additives food contact (10/2018)
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Styrene/Isoprene Copolymer allowed in the EU?
Styrene/Isoprene Copolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Styrene/Isoprene Copolymer do in cosmetics?
Styrene/Isoprene Copolymer functions as: Film forming, opacifying. It is classified as a cosmetic ingredient in our database. CAS number: 25038-32-8.
Compliance Tools
Check Styrene/Isoprene Copolymer 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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