This fine, chalky powder contains a mixture of salt, charcoal, water-hungry plant elements, and other absorbent materials. If you sprinkle it over your body, the powder leeches moisture that comes into contact it. The first time you are touched by a fungus, ooze, or plant, or by a creature or hazard with the water trait, that creature or hazard takes 1d4 damage (if the creature or hazard is immune to bleed, it takes persistent acid damage instead). The powder lasts up to 10 minutes, after which it absorbs enough moisture from the environment to become inert, or until it is touched or submerged in liquid.