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Hair Conditioning

POLYQUATERNIUM-2

CAS 63451-27-4
68

Safety score · 0–100

Fine

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

An old-school polyquaternium — a polymer of urea, dichloroethyl ether and tertiary amines — used to condition and reduce static in hair products. CIR-reviewed for use in rinse-off and leave-on at typical levels; cationic ecotox is the main flag.

Function

ANTISTATICFILM FORMING

Skin benefits

  • Effective cationic conditioner for hair
  • Antistatic and film-forming
  • Long history of use in conditioning shampoos

Known concerns

  • Aquatic toxicity from cationic charge
  • Mild skin and eye irritation potential
  • Bioaccumulation in surface waters is a soft concern

References

EU

EU CosIng database

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

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BIOTINOYL TRIPEPTIDE-1
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BIS-(ETHYL PPG-3 BEHENATE) DIMONIUM METHOSULFATE
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BIS-(ISOSTEAROYL/OLEOYL ISOPROPYL) DIMONIUM METHOSULFATE
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BIS-AMINOETHOXYETHANE/GUANIDINE HCL COPOLYMER
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BIS-DIISOPROPANOLAMINO-PG-PROPYL DIMETHICONE/BIS-ISOBUTYL PEG-14 COPOLYMER
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BIS-ISOBUTYL PEG-14/AMODIMETHICONE COPOLYMER
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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.