The Vallejo Pigment Burnt Umber includes fine milling particles to facilitate mixtures and ensure easy application on models and dioramas. Made with natural earth and synthetic pigments, it ensures excellent permanence and extraordinary light fastness. Its strong adherence makes it perfect to apply in its dry form and helps to portray a dry mud or accumulated dust. You can also use thinner to fix the pigment in place. It is non-flammable and you can also use the pigments to create volumes like accumulated dirt and mud with pigment binder.