Paint Brush Bristles. Synthetic brushes are made of nylon or polyester, or a combination of the two. Poly bristles are stiffer, which makes them good for exterior or textured work, but for fine interior work, we use softer nylon brushes. Look also for tapered bristles, which can help you work to an edge, and flagged tips, which help spread the finish smoothly and evenly. For more tips and videos, visit us on YouTube “idahopainters”. Call for a Free Interior Painting Estimate. 208-939-2278
