Catalyst™ Polytip Bristle brushes are another Princeton breakthrough that advances the science of synthetic hair. This new series is super stiff yet still extremely responsive. Unlike natural hog bristle, Catalyst™ has real integrity in water. Natural bristle can be rendered useless when it is water-soaked. The true advance in Catalyst™ is the Polytip feature. For the first time, the tip of each individual hair has been split to replicate the natural flags on the finest natural bristle. By giving each individual hair 2 to 3 distinct tips, Catalyst™ is able to hold a higher volume of paint while providing a smoother application. Designed for use with medium to heavy-bodied acrylics and oil paints, Catalyst™ pushes even heavy gel media with assurance. Catalyst™ Polytip Bristle brushes truly are tools that move paint.
- Next Gen Synthetic
- Maximum Stiffness
- Flag tips to replicate the best Chungking Bristle
- Precise control and shape retention
The Princeton Catalyst Series 6450 Bright Shader is a short-handle, stiff synthetic brush designed for oil, acrylic, and heavy gel mediums. It features Polytip bristle technology—where synthetic hairs are split to mimic natural hog bristle flags—allowing for high paint capacity, smooth application, and durability even in water.
Key Features and Benefits:
- Best For: Medium to heavy-bodied acrylics and oils, providing the stiffness of hog bristle with better shape retention.
- Shape: The "Bright" shader is a short, flat brush with a tighter blend of filaments, ideal for greater precision, controlling strokes, and creating sharp edges.
- Performance: The Polytip bristles hold more color and provide smoother application than traditional synthetics.
- Design: Features a durable, short handle suited for detailed work.








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