New UK regulations will restrict nail gel products containing the chemical TPO (Trimethylbenzoyl Diphenylphosphine Oxide) from August 2026, impacting both salon and at-home treatments.
Why TPO Is Being Banned
TPO is commonly used in UV and LED-cured gel nail systems, where it reacts to light to form a hard, glossy, chip-resistant finish. The chemical has been reclassified as a Category 1B Reproductive Toxicant (CMR), meaning it is presumed dangerous to human fertility and embryonic development. Under UK and European cosmetics laws, any chemical with a 1A or 1B CMR classification is automatically banned from cosmetic formulas as a precautionary measure.
Timeline of the Ban
From August 15, 2026, manufacturers and importers will no longer be able to place orders for new batches of TPO-containing products for the UK market. By February 14, 2027, retailers, wholesalers, and distributors must completely stop selling or supplying old stock containing TPO to salons or the public.
Impact on Consumers and Salons
Experts, including the Cosmetic, Toiletry and Perfumery Association (CTPA), note that current TPO-containing gels are not inherently unsafe for normal use, as studies showing intense reactions involved ingestion. The ban does not mean an end to all gel nail polish; many UK nail brands have already reformulated to be TPO-free. Consumers may notice variations in curing times or textures as brands switch to alternatives.
