Gum Arabic from Winsor & Newton is ideal for use with watercolour paints. This pale solution controls the spread of watercolours, while also reducing staining and slowing drying. Use Gum Arabic when you require more control of the colour and its intensity. This medium can be diluted with water to weaken its strength over the colour. Gum Arabic will increase gloss and transparency of dried watercolours. - Brand: Winsor & Newton - Gum Arabic - Size: 75ml - Controls spread of colour - Slows drying - Limits staining