Carageenan is a gelling agent that provides viscosity for marbling on fabric. Slowly sprinkle one teaspoon of Calgon and two teaspoons of Carageenan into a quart of water in a running blender. Mix at least 12 hours before marbling, Details:Available in multiple sizesKnown as "marbling size"In powder formCAUTION: Keep dyes, paints and chemicals away from children. Avoid unnecessary personal contact. Do not take internally.