EU Bans TPO in Gel Nail Polish: Health Implications

A significant ingredient in numerous brands of gel nail polish has been prohibited within the European Union (EU), yet it remains accessible in the United Kingdom. Trimethylbenzoyl diphenylphosphine oxide, commonly referred to as TPO, imparts the distinctive glossy finish to gel polish and facilitates the hardening of the polish when subjected to UV light. This ingredient was banned by the EU as of September 1 due to concerns regarding its potential toxicity to humans.

What are the health concerns associated with gel nail polish?

The European Union has stated that the ban on TPO is due to the classification of the ingredient as a CMR 1B substance, designated as a ‘reproductive toxicant’.

Several studies conducted on animal subjects have associated TPO with significant long-term fertility impairment. While additional research is warranted to thoroughly comprehend the chemical’s impact on fertility, the prohibition has been implemented as a precautionary measure. European Union regulators have classified TPO as “carcinogenic, mutagenic, or toxic to reproduction.”

Is there a possibility of gel nail polish being banned in the UK?

The current ban does not extend to the United Kingdom; however, a similar prohibition is anticipated to be implemented toward the end of 2026, thereby providing UK nail professionals additional time to adjust to the forthcoming regulations. Additionally, the United States has yet to impose regulations on TPO. Nonetheless, industry experts indicate that nail professionals in the US may be affected should salons procure their products from European Union countries. Nail salons throughout the 27 member states of the EU have been duly notified of the necessity to cease offering gel nails containing TPO and to ensure the safe disposal of their existing stock.

Other nations that align with EU regulations, including Norway and Switzerland, are also required to cease the sale of TPO-based products. It is probable that nail brands will be striving to develop or introduce products utilizing alternative ingredients to TPO, as reported by the nail industry publication Scratch.

However, certain representatives from the nail industry have expressed their opposition to the ban. Doug Schoon, a scientific consultant based in California, articulated his concerns in an open letter dated August 31, stating: “The prohibition of TPO in U.V. gels is not supported by a scientifically justified risk assessment.”

“If left uncorrected, this decision will once again impose unnecessary economic burdens, waste safe products, and undermine confidence in E.U. regulatory proportionality.”