Kusakabe Pulp Base 100mL Water-Based Primer PULP-BASE Pulp Base is a primer known as “paintable watercolor paper,” capable of recreating the texture of paper on various materials. \nThe painted surface is absorbent, allowing not only the adhesion of watercolor paints but also the expression of techniques like blurring and wet-on-wet. Similar to gesso, allow at least 72 hours for drying after application before painting. Watercolor, Gouache, acrylic, and oil paints can be applied over Pulp Base