TPO, or trimethylbenzoyl diphenylphosphine oxide, is a photoinitiator commonly used in gel nail polishes to help them cure quickly under UV or LED light. In September 2025, the European Union banned TPO in cosmetics as a precautionary measure, but it remains approved and widely used in the United States.
At Beyond Polish, we’re here to educate and empower you with the facts, so you can choose what’s right for your nails. If you’d prefer to avoid TPO, we also offer a curated selection of TPO-free gel nail polishes and traditional lacquers.
What Is TPO and Why Is It Used in Gel Polishes?
TPO is a photoinitiator that helps gel polish harden and set quickly when cured under UV or LED lamps. It’s commonly used because it produces smooth, glossy, and durable manicures that can last up to 21+ days.
Why Did the EU Ban TPO in Gel Nail Polishes?
In September 2025, the European Union banned TPO in cosmetics based on animal studies suggesting potential reproductive and developmental risks at high exposure levels.
However, it’s important to note:
- No human studies have shown harm from typical consumer use.
- The EU’s approach is hazard-based — they act on potential risks even if actual exposure is minimal.
- In the United States, TPO is still considered safe when used as directed.
Is TPO Harmful to Humans?
Currently, there’s no conclusive evidence linking TPO in gel polishes to health risks at typical exposure levels. Regulatory bodies like the FDA allow its use, and experts agree that occasional gel manicures pose extremely low risk.
If you’d prefer to avoid TPO, TPO-free alternatives are available — and we’ve made them easy to find.
TPO-Free Gel Nail Polish Options
For those who want peace of mind, we carry a wide selection of TPO-free gel polishes that deliver salon-quality results without compromise. Shop the TPO-Free Gel Polishes
