Editing Cross-country skiing (section)

====Gliding surface====
{{main article|Ski wax#Glide wax}}
Glide waxes enhance the speed of the gliding surface. The wax is either melted on the base using an iron or applied in a liquid form. The excess wax is first scraped off and then finished by brushing. Most glide waxes are based on [[Paraffin wax|paraffin]] that is combined with additive materials. The paraffin hardness and additives are varied based on snow type, humidity and temperature. Since the 2021-2022 race season, fluorinated products are banned in FIS sanctioned competitions.<ref>{{Cite web|title=Flourinated Wax Ban implementation to begin in the 2021-22 season|url=https://www.fis-ski.com/en/international-ski-federation/news-multimedia/news/flourinated-wax-ban-implementation-to-begin-in-the-2021-22-season|access-date=2021-11-05|website=www.fis-ski.com|language=en}}</ref> Before the ban, most race waxes combined fluorinated hydrocarbon waxes with [[fluorocarbon]] overlays.<ref>{{cite web |last=Harvey |first=Ian |date=9 February 2011 |title=Information on Fluorinated Waxes |url=http://www.nordicskiracer.com/news.asp?NewsID=5429 |url-status=live |archive-url=https://web.archive.org/web/20120425075240/http://www.nordicskiracer.com/news.asp?NewsID=5429 |archive-date=25 April 2012 |access-date=2014-10-21 |work=A Michigan Nordic Ski Racer}}</ref> Fluorocarbons decrease surface tension and surface area of the water between the ski and the snow, increasing speed and glide of the ski under specific conditions. Either combined with the wax or applied after in a spray, powder, or block form, fluorocarbons significantly improve the glide of the ski.<ref>{{cite web |last=Swix |date=22 February 2011 |title=Information on Fluorinated Waxes |url=http://www.nordicskiracer.com/news.asp?NewsID=5482 |url-status=live |archive-url=https://web.archive.org/web/20120425080020/http://www.nordicskiracer.com/news.asp?NewsID=5482 |archive-date=25 April 2012 |access-date=2014-10-21 |work=A Michigan Nordic Ski Racer}}</ref>