Found in boggy areas worldwide, it is a natural source of iodine. Use as a dressing. Again, use noncommercially prepared materials with caution. This injury results from frozen tissues. Light frostbite involves only the skin that takes on a dull, whitish pallor.
Deep frostbite extends to a depth below the skin.
The tissues become solid and immovable. Your feet, hands, and exposed facial areas are particularly vulnerable to frostbite. When with others, prevent frostbite by using the buddy system. Check your buddy's face often and make sure that he checks yours. If you are alone, periodically cover your nose and lower part of your face with your mittens.