Watercolour Mediums- Winsor & Newton Professional - Granulation Medium 75ml
Gives a mottled appearance to colours which usually have a smooth wash (e.g. Winsor Blue) or increases the effect of granulating colours (e.g. French Ultramarine)
For most effective results use generously on its own to dilute watercolour paints and always work with paintings on a flat surface.
Pricing shown applies to online purchases.