Cationic polymer
PEI-250
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
PEI-250 is a low-molecular-weight polyethylenimine used as a cationic conditioning film-former in cosmetics. Cationic polyamines can irritate skin and eyes, so concentration and purity controls are very important.
Function
Skin benefits
- Cationic polymer used as a film-former and conditioning agent
- Helps deposit actives on skin and hair
- Provides viscosity and substantivity in some formulas
Known concerns
- Polyethylenimines can be irritating to skin and eyes at higher concentrations
- Cationic charge can disturb skin barrier with chronic use
- Limited cosmetic-specific SCCS review
- Industrial polymer with variable molecular weights
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related cationic polymers
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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.