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Film Former

PEI-35

CAS 9002-98-6 Updated
40

Safety score · 0–100

Moderate

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

About

A cationic polymer used to deposit actives onto hair and skin. The neat material is corrosive and irritating; in finished cosmetics it is diluted but still a watch-it ingredient, especially in leave-on.

Function

VISCOSITY CONTROLLING

Skin benefits

  • Cationic film-former
  • Conditioning in hair products
  • Boosts deposition of actives

Known concerns

  • Bulk PEI is corrosive (GHS H314)
  • Skin and eye irritation potential
  • Cationic toxicity to aquatic life

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
 40
BIS-(DITRIMETHYLOLPROPANE TRIACRYLATE) HEXANEDICARBAMATE
Film Former
 40
C5-6 OLEFIN/STYRENE COPOLYMER
Film Former
 40
COLLODION
Film Former
 40
DIBUTYL MALEATE
Film Former
 40
PTFE
Film Former
 40
TETRAETHYL ORTHOSILICATE
Film Former
 40
TOSYLAMIDE/EPOXY RESIN
Film Former

Check your shelf

Find PEI-35 in your products.

Scan any cosmetic product with LuxSense to see if it contains PEI-35 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 — always read the physical product label and consult a healthcare professional for personal concerns.