Lately, some news outlets have reported that the European Union banned certain gel nail polishes. The focus is on an ingredient called trimethylbenzoyl diphenylphosphine oxide (TPO), which helps gel polish harden under a curing lamp. If you get gel manicures in the U.S., you may be wondering if there’s reason to worry. The short answer: no — there’s no need for alarm.
Why the EU Decided to Ban TPO
The European Union uses the precautionary principle in regulation. That means they act early, even if clear proof of harm in humans is not available. In this case, animal studies were the reason behind the restriction:
- In rodent experiments, researchers gave animals very high oral doses of TPO (much higher than you would ever be exposed to in nail polish).
- At those levels, the animals showed effects such as reduced fertility, developmental problems in offspring, and potential liver and kidney changes.
- Importantly, these studies involved consumption or injection of concentrated TPO, not topical use on nails.
So far, no studies in humans have found that TPO in nail products poses health risks.
What This Means for Clients in the U.S.
- Nail products typically contain less than 5% TPO, a very low concentration compared to the amounts tested on animals.
- Once cured on the nail under light, the polish hardens into a stable film, which means almost no absorption into the body.
- For these reasons, U.S. regulators do not see TPO in nail products as a health threat, and a ban is not expected.
Alternatives Are Available
Many brands are already switching to TPO-free formulas, especially since the EU now requires them. If you prefer to avoid TPO.
The Bottom Line
The EU’s ban is about taking extra precaution based on animal data, not about proven dangers to salon clients. In the U.S., experts view gel manicures as safe when used responsibly. With a few simple steps, like protecting your hands from UV light, you can continue to enjoy long-lasting, beautiful nails without worry.
