I don't know if the directions are still on the back of a can of Red Devil Lye, but that is what my mom used for directions for making her soap. She would save all the left over cooking grease, when she had enough she would make her soap for laundry. Once made she would pour into half gallon milk cartons for it to cure. After a few days she would remove the milk carton, let it cure for about a month. My job was to grade it up to use for laundry. Floors were mopped with it, dishes were washed in it. bodies were cleaned with it.