Winsor & Newton Professional Acrylic Gloss Medium 250ml — Clear Gloss, Improves Flow & Extends Open Time

Winsor & Newton Professional Acrylic Gloss Medium is a clear acrylic medium that increases transparency, flow and depth while preserving colour from wet to dry.

This 250ml gloss medium is formulated to integrate seamlessly with Winsor & Newton Professional Acrylic colours. It extends paint, improves levelling for smooth brushwork, and leaves an even gloss finish without altering the tint of the original pigments when used as directed. Made in France, this medium is ideal for artists seeking predictable drying behavior and a consistent sheen across layers.

How does this medium affect colour and drying?

When mixed with compatible professional acrylics, the gloss medium maintains the colour’s original hue as it dries, so there’s minimal shift between wet and dry states. It also helps paint films dry with a uniform gloss, which can make colours appear more saturated and luminous.

• Designed to preserve colour integrity from wet to dry
• Produces a consistent gloss across painted surfaces
• Reduces uneven sheen that can occur with multiple layers

Can I use this to improve blending and fine detail work?

Yes—adding gloss medium increases open time and improves flow, making it easier to blend edges and pull fine lines without dragging or reworking the underlying layers. Because it thins without weakening pigment strength, you can achieve glazes and subtle transitions while retaining tonal intensity.

• Extends working time for smoother blends
• Improves flow for precise brushstrokes and glazes
• Maintains pigment strength for detailed passages

What surfaces and techniques work best with this gloss medium?

This medium is suitable for use on conventional acrylic supports such as primed canvas, board, and paper. It’s compatible with Winsor & Newton Professional Acrylics and can be used for glazing, layering, pouring techniques, and varnish-ready topcoats once fully cured.

• Works with primed canvas, panels, and heavyweight paper
• Use for glazes, layering, and controlled pouring effects
• Can be mixed or applied as a final glossy overlay after cure

How much should I mix in, and how does it change handling?

A little goes a long way: start with small proportions (for example, 1 part medium to 3–4 parts paint) and adjust to reach your preferred consistency. Higher ratios increase transparency and gloss; lower ratios retain more body. Always test mixtures on a scrap surface to confirm drying time and final appearance.

• Begin with conservative ratios and increase as needed
• Higher medium content yields greater transparency and gloss
• Test on a sample to check drying behavior and sheen

Who is this for? Artists who work with Winsor & Newton Professional Acrylics and want predictable colour retention, improved flow for blending and fine detail, and a reliable gloss finish will benefit from this medium. It's suited to painters who glaze, layer, or require consistent sheen across their work, from advanced students to professional studios seeking archival-quality handling properties.