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Film Former

COLLODION

CAS 9004-70-0
40

Safety score · 0–100

Moderate

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

Nitrocellulose dissolved in ether and alcohol — dries to a tough, flexible film. Used historically in medical and nail products. The ether/alcohol solvent base is highly flammable, which is the main practical concern.

Function

BINDINGFILM FORMING

Skin benefits

  • Forms a tough flexible film for nail and topical applications
  • Long history of medicinal use
  • Quick drying for film-former use

Known concerns

  • Solvent base (ether/ethanol) is highly flammable
  • Volatile solvents can cause respiratory irritation
  • Nitrocellulose is a sensitization risk in some users

References

EU

EU CosIng database

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

Related film formers

40
4,4'-ISOPROPYLIDENEDIPHENYL/EPICHLOROHYDRIN COPOLYMER DIACRYLATE
Film Former
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BIS-(DITRIMETHYLOLPROPANE TRIACRYLATE) HEXANEDICARBAMATE
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 40
C5-6 OLEFIN/STYRENE COPOLYMER
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 40
DIBUTYL MALEATE
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 40
PEI-35
Film Former
 40
PTFE
Film Former
 40
TETRAETHYL ORTHOSILICATE
Film Former
 40
TOSYLAMIDE/EPOXY RESIN
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.