I’m brainstorming on ways to make very thin white horizontal lines in medium to dark grey soap, which would be made in a small tall loaf type mold. The layers don’t have to be perfectly straight. I don’t have the skills (or the time) at this point to pour super thin layers of batter, especially if it means mixing a portion and then letting it set up while I make the next batch of batter. It occurred to me that maybe I could sprinkle white kaolin clay powder in the same way cocoa powder might be used. Has anyone tried this? Or, is there something else I could use for the layer? I don’t have any micas. Thanks!