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Film Former

POLYESTER-4

65

Safety score · 0–100

Fine

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

A generic polyester-based film former (the -4 designates a numbered INCI variant). Used for wear and finish. Cured polymer is inert; concerns center on residual monomers from the supplier.

Function

FILM FORMINGSKIN CONDITIONING

Skin benefits

  • Film-forming polyester
  • Improves wear of color cosmetics
  • Stable polymer backbone

Known concerns

  • Mystery polymer with limited public data
  • Residual monomers depend on supplier
  • Possible film-build with repeated leave-on use

References

EU

EU CosIng database

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

Related film formers

65
ACACIA FARNESIANA GUM
Film Former
 65
ACRYLAMIDES/DMAPA ACRYLATES/METHOXY PEG METHACRYLATE COPOLYMER
Film Former
 65
ACRYLAMIDOMETHYL CELLULOSE ACETATE BUTYRATE
Film Former
 65
ACRYLATES/ETHYLHEXYL ACRYLATE/GLYCIDYL METHACRYLATE CROSSPOLYMER
Film Former
 65
ACRYLIC ACID/ETHYLTRIMONIUM CHLORIDE METHACRYLATE COPOLYMER
Film Former
 65
ACRYLONITRILE/GLYCOL DIMETHACRYLATE CROSSPOLYMER
Film Former
 65
BIS-ARACHIDYL PEG-400/SMDI COPOLYMER
Film Former
 65
BIS-BENZYL BUTYLENE GLYCOL/DILINOLEIC ACID/IPDI COPOLYMER
Film Former

Check your shelf

Find POLYESTER-4 in your products.

Scan any cosmetic product with LuxSense to see if it contains POLYESTER-4 and get a full ingredient breakdown with safety scores.

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.