Surfactant
PEI-14/PEG-20 COPOLYMER
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A PEI-based cationic copolymer used for conditioning and foam-boost. PEI irritancy and PEG purification are real considerations.
PEI-14/PEG-20 copolymer is a polyethyleneimine (PEI, degree of polymerization ~14) backbone grafted or extended with PEG-20 polyether chains, giving a cationic/non-ionic hybrid polymer. It is used in cleansers and leave-on products for conditioning, film-forming, and foam-boost effects. PEI itself is a known mucosal irritant at high concentrations and can complex with DNA in lab use — cosmetic-grade copolymers are modified to reduce these effects. The PEG-20 component must be sufficiently purified to minimise 1,4-dioxane and ethylene-oxide residues. No Annex II restriction, but SCCS has flagged various polyethyleneimines as needing safety evaluation at higher use levels. Orange tier reflects real-world irritation and impurity concerns.
Function
Skin benefits
- Cationic conditioning and foam-boost in cleansers
- Useful for hair and skin feel
- Functional in low-surfactant formulas
Known concerns
- Polyethyleneimine (PEI) backbone can be irritating at high concentrations
- Possible ethylene oxide / 1,4-dioxane traces if not purified
- Cationic polymers can irritate mucous membranes
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related surfactants
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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.