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Hair Conditioning

SILICONE QUATERNIUM-18

72

Safety score · 0–100

Fine

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

A silicone-modified quaternary ammonium polymer used to condition and smooth hair. Generally well tolerated in rinse-off; quat-family sensitization is the main caveat.

Function

SKIN CONDITIONING - EMOLLIENTHAIR CONDITIONING

Skin benefits

  • Hair conditioning
  • Anti-static
  • Smooths cuticle
  • Heat protection

Known concerns

  • Quat-class sensitization possible
  • Limited public dossier

References

EU

EU CosIng database

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

Related hair conditionings

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AVOCADAMIDOPROPYL DIMETHYLAMINE
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BABASSUAMIDOPROPYL DIMETHYLAMINE
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BEER
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BEHENOYL PG-TRIMONIUM CHLORIDE
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BIS(C13-15 ALKOXY) PG-AMODIMETHICONE
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BIS-AMINOPROPYL DIMETHICONE
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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.