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Hair Conditioning

PEI-15

CAS 9002-98-6
45

Safety score · 0–100

Moderate

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

A low-molecular-weight polyethyleneimine used as a hair film-former. Cationic polymer that conditions hair. Has known skin and eye irritation potential — a real concern for leave-on products.

Function

VISCOSITY CONTROLLING

Skin benefits

  • Cationic film-former for hair
  • Antistatic effect
  • Conditioning on damaged hair

Known concerns

  • Polyethyleneimine — known skin/eye irritation
  • Possible sensitization at higher MW
  • Cationic — not for compromised skin

References

EU

EU CosIng database

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

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PEI-42
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SR-(METHIONYL HEXAPEPTIDE-40 OLIGOPEPTIDE-231 S-SPIDER POLYPEPTIDE-1) FORMATE
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STEARAMIDOPROPALKONIUM CHLORIDE
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TALL OIL BENZYL HYDROXYETHYL IMIDAZOLINIUM CHLORIDE
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BIS-HYDROXYETHYL COCOMONIUM NITRATE
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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.