text: what does frostbite look like? both serious and unserious. kinda greyish if it's really bad it blackish when it thaws it becomes red and hurts http://www.mayoclinic.com/health/first-aid-frostbite/fa00023 i had a little bit on my foot once when it was 39 below. if you want to know what some bad frostbite looks like google "frostbite" images. i guess i got lucky. mine was only a mild case.