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Film Former

ACETOPHENONE/OXYMETHYLENE COPOLYMER

CAS 25398-55-4
50

Safety score · 0–100

Moderate

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

A nail-product film former made by condensing acetophenone with formaldehyde. Glossy and hard-wearing, but potential formaldehyde release is the main concern — EU regulates it and sensitisation reports exist.

Function

FILM FORMINGNAIL CONDITIONINGVISCOSITY CONTROLLING

Skin benefits

  • Forms hard, glossy films
  • Excellent adhesion in nail products
  • Acts as plasticiser and film former
  • Improves chip resistance

Known concerns

  • Produced by condensation with formaldehyde
  • Possible formaldehyde release on degradation
  • EU Annex III restriction applies
  • Sensitisation risk for nail technicians

References

EU

EU CosIng database

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

Related film formers

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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.