The Drawing Room

Acrylic Painting Mediums

Acrylic Mediums are made from 100% acrylic polymer emulsion and dry to form a durable surface. Mediums are added to acrylic paint to alter their characteristics and produce a variety of effects from glazing to building slight textures.

W&N Acrylic Retarder (Winsor & Newton)

Acrylic Retarder is a translucent gel which slows the drying time of acrylic colour which means you have more "open (workable) time". This enables you to work with colour for longer periods both from the palette and on the canvas.


W&N Acrylic Flow Improver (Winsor & Newton)

Acrylic Flow Improver is a medium that increases the flow of colour, allowing the application of areas of flat colour evenly without changing colour strength. Also ideal for hard edged painting as colour flows up against masking tape.


Galeria Fluid Retarder (Winsor & Newton)

Galeria Fluid Retarder is used for extending the drying and working time of acrylic colours. Small amounts (a few drops) will allow for extended blending and manipulation. Fluid Retarder does not contain sufficient acrylic resin to act as additional "binder" and should be used only in the amount needed to achieve the desired effect.


Galeria Extender (Winsor & Newton)

Galeria Extender is a highly economical medium. Galeria Extender increases the volume of paint and maintains opacity. Colour will dry to a matt finish. A great product for those with limited budgets.


Galeria Flow Improver (Winsor & Newton)

Galeria Flow Improver is an additive that loosens the surface tension of water within the acrylic film. It increases flow, allowing the artist to apply areas of flat colour evenly without changing the colour strength. Flow improver is also the best medium for "staining" applications.


Galeria Binder (Winsor & Newton)

Galeria Binder is a soft, gloss-finish gel formulated to allow the adhesion or addition of additive materials, objects or aggregates (like sand, stone, wood, tiles and more). Suitable for combined use with acrylic colour on a variety of surfaces.


Glazing Medium (Liquitex)

Creates a surface with great depth and translucence. This jewel-like glaze offers a superior wet clarity so as to minimise wet-to-dry colour shift and dries to a high gloss finish.


"Slow Dri" Blending Fluid Medium (Liquitex)

This new medium allows the painter to re-work and blend upon the painting surface much longer than when using straight colour or our other mediums and gels. The "Slow-Dri" fluid blending and painting medium is for blending free flowing surfaces. Offers excellent clarity when wet and dry. Slows drying by as much as 40% and offers exceptional brush ability.

"Slow-Dri" Blending Gel Medium (Liquitex)

Allows the painter to re-work and blend upon the painting surface much longer than when using straight colour or our other mediums and gels. The "Slow-Dri" Gel blending and painting medium allows for blending thicker layers.


Glazing Medium (Liquitex)

Creates a surface with great depth and translucence. This jewel-like glaze offers a superior wet clarity so as to minimise wet-to-dry colour shift and dries to a high gloss finish.


Flow Aid (Liquitex)

For all acrylic paints and mediums. Use in conjunction with any acrylic medium or colour when increased flow and absorption and decreased film tension and friction are important. A flow enhancer that improves the flow, absorption and blending of any water-soluble paint (i.e. acrylic paint), medium, ink or dye.


Binder Medium (Atelier)

Water based acrylic emulsion, which can be used straight from the bottle or thinned with water 1:1 to seal most surfaces. Atelier Binder Medium can be used as a sizing on canvas or cotton duck to seal the surface and prevent absorption of paint into the fabric.


Clear Painting Medium (Atelier)

The most popular medium in acrylic painting. It is used with the paint to dilute the viscosity and blend colours without losing pigment intensity. This medium allows paint to spread over a surface for more blend able gradations of colour and fast glazing techniques. Especially useful for working wet- in- dry techniques.


Liquefying Medium (Atelier)

This low-viscosity acrylic extender efficiently reduces paint viscosity while maintaining maximum covering power. When added to Atelier Interactive Acrylics, it creates the best possible medium for flow applications, including airbrushing and fine detail line work. It can also be used for horizontal painting.


Slow Drying Medium (Atelier)

Atelier Slow Medium is the most important medium for Atelier Interactive Acrylics. It is very concentrated; in small amounts it will produce a smooth, mid viscosity paint. Useful for glazing and other techniques requiring thinner paint and longer working times. When the Fine Mist Water Sprayer is also used, this medium remains active during the entire painting session and its effect is cumulative.


Fast Drying Medium (Atelier)

This medium allows you to paint rapidly. Layers dry fast and resilient, allowing quick paint progression. Use to dilute paint for glazing and thin paint techniques, or use as it is for reinforcing a tender paint layer in preparation for scratch back or scraping techniques. Water can be added to further dilute this medium.


Impasto MM2 (Matisse)

This medium is a full-bodied texture paste and modelling compound. It may be thought of as a "heavy-bodied paint"; free of colour pigmentation (however, it is not clear). Although MM2 Impasto Medium is not fully transparent when dry, it does not appear to alter the richness of Matisse Colours in any substantial way.


Painting Medium MM9 (Matisse)

Water may be used with the Matisse Colours. However, the addition of more than 30-50% water to Matisse Colours will reduce not only their colour strength (which, of course, is generally the required result) but will also reduce the "binding" capacity of the Matisse Colours.


Patina (Water Based) MM20 (Matisse)

MM20 is a glazing medium designed to slow the drying time of the paint but keep the binding and water fast capacity of the paint intact.


Retarder MM1 (Matisse)

Additions of MM1 Drying Retarder may be used in water colouring, water wash effects, stain painting and hard edge techniques where it assists in pigment wetting, rapid colour diffusion and penetration.


Tension Breaker MM3 (Matisse)

This product is a dispersant and is used to break down the surface tension of the acrylic paints. It acts as a powerful penetrating agent. It is also known as "watercolour medium" or "flow medium’’.

Spreader Medium MM8 (Matisse)

Matisse Structure Formula paint offers a thick buttery consistency suitable for impasto, oil painting and brush stroke techniques: its high strength permits ready dilution with water or mediums to allow the artist free expression by selective use of these mediums, for the results desired.

Other areas of interest:

Acrylic Brushes

Hints, Tips & Techniques for Acrylics – Mediums

Brand web-sites

Winsor & Newton






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