This innovative synthetic bristle brush has individual hairs that have been split to replicate the natural flags on the finest natural brush. Designed for use with medium to heavy-bodied acrylics and oil paints, the Catalyst Polytip pushes even heavy gel media with assurance. The head is stiff yet responsive, and unlike natural hog bristles, it has real integrity in water. Each hair has two to three distinct tips, allowing the brush to hold a higher volume of paint Smooth application Maximum stiffness