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Hair Conditioning

POLYQUATERNIUM-29

CAS 92091-36-6 / 148880-30-2
76

Safety score · 0–100

Fine

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

A chitosan-derived cationic polymer (quaternised) — sticks to negatively charged hair to detangle, smooth, and reduce static. Well tolerated in rinse-off; can build up if over-used in leave-ons.

Function

ANTISTATICFILM FORMING

Skin benefits

  • Conditions hair and reduces static
  • Forms a smoothing protective film
  • Chitosan-derived — partly biopolymer
  • Improves wet and dry combability

Known concerns

  • Quaternary ammonium polymers can build up on hair
  • Eye irritation potential at higher leave-on levels

References

EU

EU CosIng database

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

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DIMETHICONE PG-DIETHYLMONIUM CHLORIDE
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DIMETHYL DICAPROYL CYSTINATE
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DIRAPESEEDOYLETHYL HYDROXYETHYLMONIUM METHOSULFATE
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ETHYLENEDIAMINO PG-PROPYL PEG-4 DIMETHICONE
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GALACTOARABINAN HYDROXYPROPYLTRIMONIUM CHLORIDE
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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.