Winsor & Newton Professional Acrylic Glazing Medium 250ml — High-Gloss, Clear Transparency for Layered Glazes

Winsor & Newton Professional Acrylic Glazing Medium is a clear, high-gloss acrylic medium that increases transparency, improves flow, and forms a flexible, non-yellowing film for layered glazing and colour glazing techniques.

Designed for professional acrylics, this 250ml glazing medium helps artists achieve luminous depth and smooth levelling without altering colour values when used with Winsor & Newton Professional Acrylic colours. It can be blended directly into paint or applied as a separate glaze layer to extend drying time slightly, boost gloss, and create jewel-like transparency in washes and layered effects.

How does this glazing medium affect colour and transparency?

When mixed with Winsor & Newton Professional Acrylics, the glazing medium preserves the original hue and increases transparency so layered colours glow rather than become opaque. It reduces pigment density while retaining tint strength, allowing luminous glazing and subtle tonal shifts.

• Maximum transparency for stacked glazes and delicate colour transitions
• Minimal or no colour shift when paired with Winsor & Newton Professional Acrylics
• Use in thin layers to build depth without muddying tones

Can I mix it straight into paint or apply it as a clear glaze?

Yes — the medium is formulated for both approaches. Mix with paint to increase flow and transparency, or apply as a clear glaze over dried paint for a translucent layer that intensifies underlying colours.

• Mixing: combine a small amount with paint to maintain handling and colour control
• Glazing: apply diluted medium over dry paint for glossy, transparent overlays
• Layering: allow each glaze to dry before adding the next for best clarity

What finish and surface characteristics should I expect?

The glazing medium levels out brush marks and dries to a clear, flexible film with a high-gloss sheen, enhancing colour saturation and surface depth. It remains resilient on properly prepared supports and is compatible with acrylic painting systems.

• High-gloss finish for a professional, polished look
• Clear flexible film reduces cracking on flexible supports
• Improves surface flow and evens brush strokes

How do I use it safely and what practical tips help artists get consistent results?

Use in a well-ventilated space and clean brushes with water before the medium dries. Start with conservative ratios and test on a scrap panel to gauge transparency, drying time, and gloss level before committing to a finished piece.

• Typical starting mix: 1 part medium to 2–4 parts paint, adjust as needed
• Thin layers dry faster and keep clarity between glazes
• Clean tools with soap and water; cured film requires mechanical removal

Who is this product for?

This 250ml Winsor & Newton Professional Acrylic Glazing Medium is aimed at painters seeking controlled transparency, improved flow, and a durable high-gloss surface—ideal for fine artists, illustrators, and acrylic technicians who layer colour, use glazing techniques, or want to enhance pigment brilliance without altering colour fidelity.