Winsor & Newton Watercolour Blending Medium slows the drying of watercolours, to allow more time for blending.

Winsor & Newton Watercolour Granulation Medium gives a mottled or granular appearance to colours which typically give a smooth wash.

Winsor & Newton Watercolour Gum Arabic increases the brilliance, gloss and transparency of watercolour paints and is ideal for controlling wet-on-wet spread.

Winsor & Newton Watercolour Iridescent Medium gives watercolour paints a shimmer or glitter effect, when mixed or applied over the top.