Difficulty: Moderately Easy
Step1
Wash yourself. If a water source is available, this can be accomplished by splashing your face, underarms, feet and the area between your legs with water and wiping it around. Yes, this will be cold, so try to get it all done in less than a minute or so. As discomforting as the chill may be, it will be less of a discomfort than the skin rash that will probably develop if you don't wash. Wipe yourself dry (very important).
Step2
Use snow if no water is available. Take a handful of the cold white stuff and scrape it over the areas of your body mentioned above--armpits, hands, feet, face, front and backside. Even though you only used snow, it is still imperative that you take the time to wipe yourself dry with something.
Step3
In addition to your bath, take time once or twice each day to gently wipe yourself dry in these same areas, as these are the places on your body where moisture and sweat tend to accumulate.
Step4
Change your underwear at least twice times a week. This may be an odd one--who doesn't know to change their underwear, after all--but in a freezing environment it often seems unnecessary, not to mention uncomfortable. Do it anyway.
Step5
If you find yourself in a shelter that has been used before, check your body and clothes each night for lice. If you find any, use insecticide powder to get rid of the lice (if the power is available; otherwise, see Step 6).
Step6
Hang your clothes up outside in the cold when you aren't wearing them. Before putting them on, beat them with a stick. This will get rid of any lice that may have been living on them.