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Film Former

BUTANEDIOL/ADIPIC ACID COPOLYMER

CAS 25103-87-1
78

Safety score · 0–100

Fine

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

A polyester polymer of 1,4-butanediol and adipic acid that forms a smooth flexible film on skin and improves product texture. Stable and well-tolerated, but synthetic and not readily biodegradable.

Function

SKIN CONDITIONING

Skin benefits

  • Forms a smooth, flexible film
  • Improves skin texture
  • Stable in a wide pH range
  • Synthetic polyester

Known concerns

  • Synthetic polymer with limited biodegradability
  • Possible trace residual monomers

References

EU

EU CosIng database

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

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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.