[[eutectic]] [[frigorific mixture]] which can get as cold as {{convert|-18|C}}.<ref>{{cite web|url=http://antoine.frostburg.edu/chem/senese/101/solutions/faq/zero-fahrenheit.shtml|title=General Chemistry Online: FAQ: Solutions: Why isn't 0°F the lowest possible temperature for a salt/ice/water mixture?|access-date=15 March 2016}}</ref>
The salt and ice challenge can quickly cause second- and third-degree injuries similar to [[frostbite]] or being burnt with the metal end of a [[lighter]], as well as causing painful [[Ulcer (dermatology)|open sores]] to form on the skin. And, In some cases, Extreme Agony, or Mild-to-Moderate Bruising. Due to the numbing sensation of the cold and possible nerve damage during the stunt, participants are often unaware of the extent of any injuries sustained during the challenge, only feeling pain once the salt on their skin enters lesions created during the challenge. Skin discoloration from the challenge may remain after the challenge has been attempted.<ref>{{cite web|url=http://www.cbsnews.com/8301-504763_162-57465323-10391704/ice-and-salt-challenge-leaves-12-year-old-pittsburgh-boy-with-second-degree-burns/ |title="Ice and salt challenge" leaves 12-year-old Pittsburgh boy with second-degree burns - HealthPop |publisher=CBS News |date=2012-07-02 |access-date=2013-06-24}}</ref><ref>{{cite web|last=Kwak |first=Janet |url=http://www.nbclosangeles.com/news/health/ice-and-salt-youtube-challenge-skittles-cinnamon-dare-burns-doctors-161177865.html |title=Ice-and-Salt Challenge Fires Up Health Officials <nowiki>|</nowiki> NBC Southern California |publisher=Nbclosangeles.com |access-date=2013-06-24}}</ref><ref>{{cite web|url=http://www.post-gazette.com/stories/local/neighborhoods-city/boy-12-badly-injured-in-salt-and-ice-challenge-642561/ |title=Boy, 12, badly injured in 'salt-and-ice' challenge - Pittsburgh Post-Gazette |publisher=Post-gazette.com |date=2012-06-29 |access-date=2013-06-24}}</ref>
