Skip to content

Hair Conditioning

SILICONE QUATERNIUM-18

Updated
72

Safety score · 0–100

Fine

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

About

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

72
AMINOPROPYL DIMETHICONE
Hair Conditioning
 72
AMODIMETHICONE/MORPHOLINOMETHYL SILSESQUIOXANE COPOLYMER
Hair Conditioning
 72
AVOCADAMIDOPROPYL DIMETHYLAMINE
Hair Conditioning
 72
BABASSUAMIDOPROPYL DIMETHYLAMINE
Hair Conditioning
 72
BEER
Hair Conditioning
 72
BEHENOYL PG-TRIMONIUM CHLORIDE
Hair Conditioning
 72
BIS(C13-15 ALKOXY) PG-AMODIMETHICONE
Hair Conditioning
 72
BIS-AMINOPROPYL DIMETHICONE
Hair Conditioning

Check your shelf

Find SILICONE QUATERNIUM-18 in your products.

Scan any cosmetic product with LuxSense to see if it contains SILICONE QUATERNIUM-18 and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.