Question to the Department for Business and Trade:

To ask His Majesty's Government what plans they have to ban the use of the chemical trimethylbenzoyl diphenylphosphine oxide in gel nail polish, following the decision of the EU to do so.

Trimethylbenzoyl diphenylphosphine oxide (TPO) was added to the GB Mandatory Classification List (GB MCL) under the GB Classification, Labelling and Packaging (CLP) Regulation in February 2025. As per the requirements of Article 15 of the UK Cosmetic Regulation, Government is taking steps to prohibit the use of TPO in cosmetic products in Great Britain. Full details of the amendments to the Cosmetic Regulation, including any transitional provisions, will be prepared in due course. The first stage will be to ensure no new cosmetic products containing TPO are placed on the market from August 2026.