The paintbrush with pony bristles and a bamboo handle is suited for calligraphy and sumi-e painting. Pony bristles offer good paint retention and the fine tip of the paintbrushes is suited for detailing and fine strokes.  Care: Caring for paintbrushes is essential to keeping them in good working condition and to their life span. Watercolors: dip the paintbrush in water and rinse in warm water. Acrylic: clean in soapy water and rinse in warm water. Practical information: Never let dry before cleaning.  Using a hydrating paintbrush cleaner after using taltine or soap prevents bristles from drying and keeps the supple shape of the paintbrush.