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Heading into the Milan-Cortina 2026 Olympics, skiers and snowboarders were already adjusting to a ban on fluorinated waxes long prized for making their equipment faster. Last week, the Winter Games saw their first enforcement of that rule, which is aimed at protecting public health and the environment.
South Korean cross-country skiers Han Dasom and Lee Eui-jin were disqualified from the women’s sprint event on 10 February. That came one day after Japanese snowboarder Shiba Masaki was disqualified from the men’s parallel giant slalom. In all three cases, routine testing found banned compounds on their equipment.
The so-called “fluoro” waxes provide a “really ridiculous speed advantage.”
For decades, elite snow sports athletes have relied on waxes with fluorocarbons that are exceptional at repelling water and dirt. Former U.S. cross-country racer Nathan Schultz told Grist the so-called “fluoro” waxes provide a “really ridiculous speed advantage,” especially in warmer conditions like those experienced at these Games.
But these waxes also contained PFAS, short for per- and polyfluoroalkyl substances. This class of 15,000 so-called “forever chemicals” are notorious for never breaking down. Studies have linked exposure to PFAS to thyroid disease, developmental problems, and cancer, and research has found elevated levels in ski technicians who regularly handled the waxes. PFAS have also been detected in soil and water near ski venues, including wells drawing from aquifers in Park City, Utah, suggesting broader environmental contamination.
Amid growing concern over the environmental impacts and the risks to skiers, their technicians, and others, the International Ski and Snowboard Federation, or FIS, called for a ban in 2019. The prohibition took effect in 2023, and applies to all events governed by the federation, including nordic, alpine and freestyle skiing, ski jumping, and snowboarding.
Officials test multiple points on each competitor’s equipment, using a technique known as Fourier transform infrared spectroscopy to detect fluoros. If a given spot on a ski or snowboard turns green, it passes. A red result indicates the presence of the banned substance. Three or more red spots leads to disqualification.
Representatives for the Japan team did respond to comment. A spokesperson for the Korea Ski Association initially told the South Korean news agency Newsis that the organization was “perplexed” by the results. “They tested negative in all previous international competitions with no prior issues,” they said. “We will consult experts from wax and ski manufacturers to investigate whether the issue lies with the wax or skis.”
In an emailed statement, the Korean Olympic Committee told Grist that fluorine was detected in what it believed to be fluorine-free waxes. “The Ski Association has purchased [fluorine]-free wax products, so it will protest,” wrote the spokesperson. The team will also replace the wax and check the skis again after cleaning to “prevent recurrence.”
It is unclear if a protest was ever officially filed or what the outcome was. The Korean team declined to elaborate and FIS did not immediately respond to Grist’s questions. But unlike some infractions, like those related to doping, discipline for unintentional fluoro use generally applies only to the event in question. The Korean athletes competed again Thursday in the 10-km freestyle event, finishing 73rd and 80th.
This time the results stood.
Correction 24 February 2026: An earlier version of this story accidentally referred to fluoride instead of fluorine in one paragraph.
—Tik Root, Grist
This article originally appeared in Grist at https://grist.org/accountability/the-olympics-just-saw-its-first-forever-chemical-disqualifications/.
Grist is a nonprofit, independent media organization dedicated to telling stories of climate solutions and a just future. Learn more at Grist.org.
