Winsor & Newton Watercolour Medium Granulation Medium 75ml
Winsor & Newton Granulation Medium is a low- viscosity formula, that increases the granulation of color, giving a natural mottled appearance to colors which usually give a smooth wash (e.g. Winsor Blue), or enhancing the effect of granulating colours (e.g. French Ultramarine).
For maximum effect, dilute color generously with medium alone.