Make sure to wash your hands with hand soap after preparing Kava to remove any kavalactones that might be sticking around on your skin. This was one of the other things that I started doing where I noticed a big decrease in the dryness on my hands.
Also, I been using this method and it has helped me as well:
Here is a method I came up with for kneading medium grind kava. It has the advantages of being nonmessy, quick, and keeps your hands clean and dry. Kavalactones don't cling to your hands, thus you get less dermopathy on your hands. I used to get cracks in my skin near my fingernails when I...