Cationic polymer
PEI-7
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
PEI-7 is a low molecular weight polyethyleneimine used as a film-forming and conditioning polymer in cosmetics, mainly in hair products, with moderate irritation potential at high levels.
Function
Skin benefits
- Effective film former and conditioning polymer
- Improves hold and feel in hair and skin products
- Low-volatility, low-systemic-exposure polymer
Known concerns
- Cationic polyethyleneimines can irritate eyes and mucosa
- Trace ethyleneimine monomer of concern if not well purified
- Environmental persistence considerations
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.