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Hair Conditioning

POLYSILICONE-40

Updated
80

Safety score · 0–100

Good

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

About

A high molecular weight silicone copolymer that conditions hair and adds smoothness. Polymeric silicones are gentle on skin; main caveat is trace D4/D5 cyclic siloxanes if not purified to current EU spec.

Function

SURFACTANT - EMULSIFYINGHAIR CONDITIONINGHAIR FIXINGHAIR WAVING OR STRAIGHTENINGDISPERSING NON-SURFACTANT

Skin benefits

  • Improves spreadability and slip
  • Conditions hair and skin
  • Compatible with broad range of formulations

Known concerns

  • Trace cyclic siloxane impurities possible at unpurified grade
  • Limited targeted ecotoxicology data on this specific copolymer

References

EU

EU CosIng database

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

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AMODIMETHICONE HYDROXYSTEARATE
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BIS-HYDROXY/METHOXY/METHYL AMODIMETHICONE CROSSPOLYMER
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BIS-PEG-8 PEG-8 DIMETHICONE
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BIS-PHENYLPROPYL DIMETHICONE
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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.