Great Britain’s gel nails ban starts on Saturday, August 15, 2026, when suppliers and producers can no longer introduce newly made cosmetic products containing trimethylbenzoyl diphenylphosphine oxide into England, Scotland and Wales. The rule covers nail gels as well as other cosmetics.
Trimethylbenzoyl diphenylphosphine oxide, or TPO, is classed as a CMR 1B under CLP regulations. It is the ingredient that helps gel polish harden quickly under UV or LED light, which is why the change affects product formulation rather than the service itself.
Great Britain and TPO
The Cosmetic, Toiletry and Perfumery Association said the restriction is a phased phase-out, not an immediate end to gel manicures. That leaves a narrow distinction in place: new TPO-based products cannot enter the market, but a gel manicure remains legal after the new rule begins.
For beauty professionals, the practical question is what happens to stock already bought lawfully. The source says they can keep using those products on clients until they are gone, so the change falls first on purchasing and supply rather than on the treatment chair.
Distributors and February 2027
Distributors and merchants have until February 14, 2027, to sell or distribute remaining TPO-based stock. After February 15, 2027, cosmetics containing TPO will be banned from sale or supply across England, Scotland and Wales.
That creates a transition period for salons and suppliers, but it is a finite one. The European Union prohibited the chemical in cosmetics on September 1, 2025, and Great Britain’s timetable now gives the market until February 2027 to clear what is already in circulation.
The remaining practical issue is inventory. How many TPO-based products are still on shelves and in back rooms before the February 2027 cutoff will determine how much stock can be used up before the final ban takes effect.
