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Winsor & Newton Galeria Flow Improver (250ml)


  • Designed for use with acrylic paints
  • Increases paint flow
  • Promotes flat and even colour application
  • 250ml pot
  • Flip-top lid

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Video: Winsor & Newton Galeria Mediums

Winsor & Newton Galeria is a collection of mediums designed to enhance the creations of artists working with acrylic paint, such as 
Winsor & Newton’s Galeria Acrylic Colour range. Increasing flow, by loosening the surface tension of water within acrylic colour, Galeria Flow Improver allows flat, even paint application, with no reduction in colour strength. 

What is a Medium?

Any liquid which changes the consistency of the paint it is mixed with may be classed as a medium. Winsor & Newton Galeria Acrylic Mediums are designed specifically for use with acrylic paints, and range from thin glaze to thick impasto mediums, with a variety of choices in between.

Why use a Medium?

By changing the properties of paint, a medium extends the possibilities of how an artist works with the colour, and affords a plethora of exciting techniques and effects.

Winsor & Newton Mediums Finder provides an easy, interactive method of choosing the correct medium, for the artist to achieve the desired effect.

Why choose Winsor & Newton Galeria Flow Improver?

All Winsor & Newton Galeria Mediums are fully intermixable, and can be layered or mixed on the palette, allowing the artist to fully explore both the textural and visual properties of Acrylic Colour.

Ideal for fluid watercolour techniques, Galeria Flow Improver is also suitable for use in staining and in masking applications, as the medium allows the colour to sit more smoothly and evenly against the masked edge.

How do I use Winsor & Newton Galeria Flow Improver?

Always dilute flow improver with water (1 part flow improver to 20 parts water) before adding to paint.

The following videos show some techniques in which Galeria Flow improver can be used:

How To Mask When Painting

Creating Acrylic Triangles

Can you explain some of the terms used when painting with Acrylic Mediums?

Click here for a glossary of Acrylic painting terms, including the different types of medium.

Who are Winsor & Newton?

In 1832, William Winsor and Henry Newton introduced the first moist water colours to the world. Today, Winsor and Newton remain the premier choice for artists, offering a wide variety of fine art supplies including: oil, water colour, acrylic and alkyd paints, pastels, artists' brushes, canvases, papers and portfolios.

Reviews (7)

Not used this yet, still trying to work out how I get twenty to one mix!
Very Good
It does the job well and makes my paint longer!
Ideal for my airbrush.
Never very sure hoe to use this. Label says add with x20 volumes of water. So use like watercolour washes. Very effective
I use this with acrylic paint and for use with my airbrush. It works really well and will last a long time as you really only need a few drops.
great product