You can use aloe vera juice as a substitute for all of the water or part of it. I usually use it as part of the liquid and water for the other part. I dissolve the lye in water first. You can add the aloe juice to the mixed oils and blend, then add your lye/water mixture. If I am using aloe vera liquid as the full amount for liquid, I usually freeze the juice in a baggie and break it up into pieces before adding the lye to the juice. I add a little lye at a time to the frozen juice, stirring after each addition.