Styrene/Isoprene Copolymer

INCI: STYRENE/ISOPRENE COPOLYMER

CAS Number
25038-32-8
Function
Film forming, opacifying
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted; CIR: safe in present practices of use and concentration

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
high
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Isoprene monomer is classified as IARC Group 2B (possibly carcinogenic). Residual monomer must be strictly controlled. Less common in formulation databases

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Concern Level: Moderate

Frequently Asked Questions

Is Styrene/Isoprene Copolymer safe in cosmetics?

Isoprene monomer is classified as IARC Group 2B (possibly carcinogenic). Residual monomer must be strictly controlled. Less common in formulation databases The EU classifies Styrene/Isoprene Copolymer as "permitted". Safety rating: GOOD.

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.

What is the Margin of Safety for Styrene/Isoprene Copolymer?

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.

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