Granulation Medium. Granulation Medium gives a mottled or granular appearance to colours which usually give a smooth wash, such as Winsor Red or Winsor Blue. By adding granulations Medium to colours that already granulate, such as Viridian or French Ultramarine, the effect is further enhanced. Granulation is popular wherever you want to add interest or dimension to otherwise flat areas.

Lifting Preparation. Lifting Preparation allows dry washes, including staining colours, to be more easily lifted from paper with a wet brush or sponge. It is an ideal preparation with which beginners can prime the paper allowing corrections to be made to their painting.

Permanent Masking Fluid. This medium is used to mask specific areas of paper, making them resistant to water. It can also be mixed with water colours and is ideal for isolating areas of fine detail. Unlike Art Masking Fluid, Permanent Masking Medium is not removable.

Blending Medium. This liquid is used to slow the drying rate of water colours allowing more time for blending. It is particularly useful in hot climates where artists would like their water colours to stay open and workable for a longer period of time.

Texture Medium.  Texture medium contains fine particles and can be used to give the impression of depth and structure to water colour paintings. It is ideal for emphasising areas such as sandy beaches or the bark of a tree in figurative paintings. Used with multiple washes, Texture Medium catches different layers of colour and really gives a new dimension to water colour painting.

Iridescent Medium. This medium gives pearlescent or glitter effects to your water colours. It can be mixed directly with water colours or applied over a dried wash.

Art Masking Fluid. A liquid with added pigmentation for masking areas of work needing protection when colour is applied in broad washes. It is composed of rubber latex and pigment. For best results remove as soon as possible after application. Brushes can be cleaned if washed immediately with water after use. Sections treated with Art Masking Fluid must be allowed to dry before overpainting. Once dry these areas remain protected and cannot be penetrated by colour.

Colourless Art Masking Fluid. A colourless liquid for masking areas of work needing protection when colour is applied in broad washes. Specifically designed for soft sized papers to avoid staining. For best results remove as soon as possible after application. The fluid is composed of rubber latex. Brushes can be cleaned if washed immediately with water after use.

Gum Arabic. A pale coloured solution that increases the gloss and transparency of water colour. It can be thinned with water. Adding Gum Arabic to a water colour wash will have the following effects:

• it will slow the drying time of your paint, giving you slightly longer to work on creating your image or working wet into wet 
•  it increases transparency and gloss to give greater brilliance of colour, giving you luminous colours
• it reduces the staining of pigments, making washes easier to lift

Ox Gall Liquid. A wetting agent used to improve flow when mixed directly with water colours. It can also be used on very hard sized papers to reduce surface tension.