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Hair Conditioning

STEARYL DIMETHICONE PG-DIETHONIUM CHLORIDE

Updated
68

Safety score · 0–100

Fine

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

About

A silicone-quaternary ammonium hybrid used to condition hair and skin. The silicone gives slip while the quat helps it cling to fibers. Generally well tolerated in rinse-off and leave-on products.

Function

HAIR CONDITIONING

Skin benefits

  • Conditions hair and skin
  • Reduces static and tangles
  • Adds smooth silicone slip
  • Mild antimicrobial via quat group

Known concerns

  • Quaternary ammonium can mildly irritate sensitive skin
  • Not readily biodegradable
  • Limited public CIR data

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 — always read the physical product label and consult a healthcare professional for personal concerns.