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Film Former

SODIUM STYRENE/MA COPOLYMER

CAS 52500-92-2
80

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A styrene/maleic-anhydride copolymer (sodium salt) used to stabilize emulsions and build films. The polymer itself is too large to penetrate skin; main caveats are environmental, not toxicological.

Function

EMULSION STABILISINGSKIN CONDITIONING

Skin benefits

  • Emulsion stabilization
  • Film-forming
  • Improves product texture

Known concerns

  • Microplastic / persistence concerns in rinse-off
  • Low biodegradability
  • Residual styrene monomer if not well-purified

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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ACRYLATES/STEARETH-50 ACRYLATE COPOLYMER
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ACRYLATES/STEARYL ACRYLATE/DIMETHICONE METHACRYLATE COPOLYMER
Film Former

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.