Schmincke watercolor granulation medium 15ml Product to spray in colors and obtain subsequent granulation. Due to the short range of granulated colors in Horadam watercolor, the brand has created this practical medium where you can transform all the colors you want into a granulation effect, before each drying. As only some of the watercolors are originally grainy, this medium helps create a grainy effect for these colors. However, if it is used for already grainy colors the effect will be intensified. It must be used with the watercolor still wet to be able to perform the effect correctly. Comes with an easy and practical spray applicator. Contains 15 ml. Brand: Schminke.