In Painting

Dry brush is a painting technique in which a small amount of paint is put on a dry paintbrush. No water or medium other than paint is used to wet the brush. This technique can be achieved with both water-based media, such as acrylic paint, tempura, or watercolor; and oil-based paint. However, dry brushing is most often used with watercolor paintings. It is not difficult to learn how to accomplish dry brushing techniques, but most people find it easier to experiment until comfortable using this method.
When using the dry brush method with water-based paints, the brush should be dry or somewhat damp prior to loading it with paint. It is then applied to a dry support or platform. In addition to paper, it is possible to dry brush on wood, plaster of Paris castings, papier-mâché, and other similar items. Dry brushing with watercolor is oftentimes used to create a scratchy, rough-textured appearance. In water paintings, dry brush techniques are employed most often on objects like foliage, bark, stones, clouds, etc.