My label says:Instructions are usually on the label, but I would use a handful in one of the plastic dishpans that you can get at the dollar stores.
2 cups in a warm bath(for human winter blues alleviation).
2 cups salt in 2 cups water for tired feet or as a wet topical compress.
2 cups salt in a gallon of water for bandages, compress, or soaking bath.
I won't post the laxative dosage

BTW have never used it for anything, just have it on hand for chickens in case.