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GLYCERETH-9 TRIS(TRIMETHYLBENZOYL PHENYLPHOSPHINATE)

30

Safety score · 0–100

Caution

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

A UV-curing initiator used in gel nail polish — close cousin of TPO, which the EU banned from September 2025 over reproductive concerns. Treat with caution in the same regulatory context.

Function

FILM FORMING

Skin benefits

  • UV/LED photoinitiator for gel nail polish
  • Enables fast cure
  • Used at low %

Known concerns

  • Phosphine oxide photoinitiator class — TPO banned in EU cosmetics from Sep 2025
  • Possible skin sensitization
  • Reproductive toxicity flagged for analogue TPO

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