TPO - What you need to know
TPO stands for Trimethylbenzoyl Diphenylphosphine Oxide. In simple terms, it is a photoinitiator.
When you place a client’s hand under a UV or LED lamp, TPO is the "on switch" that catches the light and triggers the chemical reaction that turns liquid gel into a hard, glossy finish. For years, it has been a favorite for manufacturers because it cures quickly, works beautifully with LED lamps, and prevents light colors from yellowing.
Why is it being banned?
The shift isn't because TPO doesn't work—it works too well. However, the European Union recently reclassified TPO as a CMR Category 1B substance (meaning it is "presumed to have the potential to be toxic to reproduction" based on animal studies).
While the risk to human nail technicians and clients is considered extremely low (since we don't ingest nail polish!), the UK and EU follow a "precautionary principle." If there’s a safer alternative available, the law requires the industry to move toward it.
When will it be implemented in the UK?
The timeline for the UK is slightly different than the EU due to post-Brexit regulatory processes (UK REACH). While the EU ban is already in full swing as of September 1, 2025, the UK is working on its own transition period.
Note: These dates are currently the proposed timeline from the UK government. Many leading UK brands are already reformulating now to stay ahead of the curve.
Long-Term Pros: Why This is Good for the Industry
At first glance, a ban feels like a headache for salon owners. However, the long-term benefits are significant:
Enhanced Safety Standards: It pushes the industry toward "next-generation" chemistry. New photoinitiators like TPO-L or BAPO are being used instead, which offer the same performance without the reproductive toxicity concerns.
Reduced Sensitivity: Removing TPO often goes hand-in-hand with cleaner formulations (like HEMA-free), which reduces the risk of long-term allergies for nail techs who work with these chemicals daily.
Consumer Trust: As clients become more educated about "clean beauty," being able to market your salon as TPO-Free provides peace of mind and builds professional authority.
Future-Proofing: By switching to TPO-free products now, you won't be left with "dead stock" when the 2027 hard deadline hits.
What Should You Do Now?
Don't panic! Your current products are still legal to use in the UK for the time being. However, the best way to prepare is to audit your kit. Check the labels (INCI lists) for Trimethylbenzoyl Diphenylphosphine Oxide.
As you finish your current bottles, look for replacements from brands that have already transitioned to TPO-free formulas.
