Gel nail polish is popular among many, appreciated for its durability. It can last for weeks without chipping, keeping that shiny look even through all sorts of daily activities. However, as of September 1, 2025, the European Union has decided to ban specific chemicals found in many gel polishes, which has raised some safety concerns for nail salons.
The chemical in question is trimethylbenzoyldiphenylphosphine oxide (TPO). This substance is known for reacting under UV light to help quickly cure the polish and give it that glassy finish.
This action seems to stem from various studies that suggest exposure to TPO might be linked to fertility issues. While much of this research focuses on animal studies rather than humans, the EU prioritizes a “better safe than sorry” approach in cosmetic regulation.
The TPO has now been categorized as a Category 1B carcinogenic and reproductive toxicant. Under EU regulations, this classification led to an automatic ban.
Consequently, both the advertising and use of products containing TPO—including those in professional environments like nail salons—will not be allowed.
Differences Between Gel and Regular Polish
The application process is mainly what sets gel polish apart from regular polish. According to the Cleveland Clinic, it’s not just about the chemicals that should be monitored.
“Both types of nail polish can look similar, but while regular polish dries on its own, gel polish requires a specialized UV or LED lamp that dries it in about 60-90 seconds,” the resource notes.
During a gel manicure, those UV lamps quickly dry the polish. But, there’s a downside; they also emit UV rays, which are associated with skin cancer and premature aging. Research suggests that the connection between the use of salon lamps and increased cancer risk is still somewhat shaky or inconclusive.
As a precaution, salons in the EU must stop using any products containing TPO, even if they have stock before the deadline.
Technically, any leftover bottles containing TPO will also be illegal after September 1. For now, this ban applies only within the EU.
On a positive note, customers don’t need to worry that gel nails will vanish completely. Reports indicate that many brands are already reformulating their products to include alternative ingredients to TPO, like TPO-L, BAPO, and methylbenzoyl formers.
