The United Kingdom has officially banned trimethylbenzoyl diphenylphosphine oxide (TPO), a key ingredient in gel nail products, from all new cosmetic products. The ban took effect on August 15, 2026, and requires all nail salons across the country to eliminate TPO-based products from their shelves by February 14, 2027.
This regulatory action follows studies suggesting that TPO could be harmful to reproductive health and may be linked to long-term fertility issues. The chemical was already prohibited in the European Union in September 2025, where authorities cited the need to exhibit “extreme caution” in light of its potential dangers.
Ban Timeline and Market Impact
From August 15, 2026, manufacturers and importers are no longer able to sell products containing TPO to the UK market. This initial restriction applies to new products entering the supply chain. The subsequent deadline of February 14, 2027, mandates that all TPO-based products be completely removed from UK nail salons, ensuring that consumers no longer have access to these items.
This phased approach gives the industry time to transition to safer alternatives. The ban aligns the UK with the EU's earlier decision, reflecting a growing international consensus on the risks associated with TPO.
Expert Reactions and Industry Response
Caroline Rainsford, director of science at The CTPA, explained the scientific basis for the ban: “The reason why TPO has been banned in cosmetic products is based on its hazardous properties, meaning how a substance might behave under a ‘worst-case’ situation, when our bodies are exposed to a very large amount.”
Some industry players have already moved away from TPO. Juanita Huber-Millet, Founder and Creative Director of luxury salon brand Townhouse, where the products used are TPO-free, stated: “Moving away from ingredients like TPO isn’t a reaction to regulation - it’s how we’ve always approached innovation. We’ve invested heavily in developing TPO-free systems that meet our standards without compromise. Our clients should never have to choose between exceptional results and peace of mind.”
Reassurance for Consumers
Beauty expert Danielle Louise, from booking platform Fresha, sought to reassure clients: “There's no reason to cancel your appointments or worry that something has suddenly become unsafe. These kinds of updates happen more often than people realise. As new scientific evidence becomes available, regulations are reviewed, and brands adapt their formulas. It's one of the ways the beauty industry continues to raise standards.”
Louise emphasised the importance of choosing a reputable salon: “One of the best things you can do is choose a reputable salon that uses recognised professional products and follows good hygiene practices. If you're ever unsure about the products being used, don't be afraid to ask. A professional nail technician should be happy to explain which brands they use and answer any questions you have.”
The ban represents a significant shift in the UK cosmetics market, prioritising consumer health over chemical convenience. As the February 2027 deadline approaches, nail salons will need to ensure their product lines comply, and consumers can expect to see TPO-free alternatives become the standard.
