Professional Acrylic Medium, Flow Improver, 250 mL Bottle

Winsor & Newton’s Professional Acrylic Flow Improver is the medium artists reach for when they want smoother, more controlled application without sacrificing color strength. This medium works like a gentle “wetting agent,” helping acrylic paint glide effortlessly across the surface while increasing flow, dispersing pigment evenly, and reducing drag from the brush. It’s especially helpful for fine detail work, glazing, staining techniques, or anytime you need a paint consistency that feels more fluid without adding excess water (which can weaken the paint film). Flow Improver thins the viscosity of acrylic color while preserving adhesion and minimizing color shift, creating reliable, silky application every time you paint. Its professional, non-yellowing formula ensures your artwork maintains clarity and color integrity over time. Whether you're refining crisp linework, creating long pulls of color, or encouraging paint to settle smoothly into textured surfaces, this medium gives you the control and consistency you need.