Safe Alternatives to TPO in Nail Polishes
What is TPO and Why Did the EU Ban It?
TPO (trimethylolpropane triacrylate oxide) is a photoinitiator used in gel nail polishes to cure nails under UV or LED lamps. Recent studies have classified it as potentially toxic to reproduction, which led to its ban in the European Union in September 2025 (thetimes.co.uk).
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