Pour some of the dry mixture into a bowl and add water or witch hazel. It will foam for 3-4 minutes then settle down to a paste. Apply to skin. This will turn white on the skin when it dries similar to calamine lotion. Warning: If the skin is raw from scratching, it will sting a little when you apply it for the first time. If you mix this water this ointment will last a week, if mixed with witch hazel the ointment will be good for two weeks. The anti-itch ointment ingredients will be shipped dry in a sealed bag. The package contains three ounces of product.