This range of long handled paintbrushes have synthetic bristles that are longer lasting and cooperate better than natural bristle across a broad range of mediums. The ZEN series is a perfect brush for painters switching from oils to acrylic or water mixable oil.Care:Caring for paintbrushes is essential to keeping them in good working condition and to their life span.Oil: dip the paintbrush in a solvent such as taltine. Clean in soapy 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.