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Conditioning Agent

PERFLUORONONYL DIMETHICONE

CAS 259725-95-6 Updated
25

Safety score · 0–100

Caution

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

About

A dimethicone capped with a nine-carbon perfluoroalkyl chain — strong waterproofing for long-wear products, but C9 PFAS is the type of long-chain perfluoroalkyl chemistry the EU is moving to ban outright. Persistent and bioaccumulative.

Function

SKIN CONDITIONING - MISCELLANEOUSSKIN CONDITIONING - OCCLUSIVESLIP MODIFIER

Skin benefits

  • Outstanding water and oil repellency
  • Durable long-wear films for makeup
  • Excellent thermal and chemical stability

Known concerns

  • C9 perfluoroalkyl chain is long-chain PFAS
  • ECHA REACH restriction scope captures this class
  • Bioaccumulation and environmental persistence
  • Likely to be phased out of EU cosmetics

References

EU

EU CosIng database

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

Related conditioning agents

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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.