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POLYQUATERNIUM-34

CAS -
82

Safety score · 0–100

Good

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

A cationic polymeric hair and skin conditioning agent that forms substantively adherent films; widely used in rinse-off hair care with a favourable safety profile.

Polyquaternium-34 is a quaternary ammonium-containing cationic polymer classified as a skin and hair conditioning agent with antistatic properties. It is not listed in any EU cosmetic restriction Annex and carries no GHS hazard classifications. As a cationic polymer it binds electrostatically to negatively charged keratin surfaces, providing substantivity and film-forming benefits without significant skin penetration. It is used in rinse-off hair care formulations, body washes, and skincare products at typical concentrations of 0.1-5%.

Skin benefits

  • Provides excellent hair detangling and antistatic properties
  • Forms a substantive film on skin for improved moisturisation feel
  • Improves wet combing and sensory feel of rinse-off products

Known concerns

  • Environmental concern for cationic polymers entering wastewater

References

EU

EU CosIng database

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

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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.