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After drying a coloured wash became darker at the edges than in the centre. What is the most likely cause?

Answer and explanation

Correct answer: Pigmented water accumulated and dried along the edges

The governing concept is pigment pooling, often called a dark edge or back-run effect. As the wash dries, liquid and pigment migrate or collect toward a boundary; when the water evaporates, more pigment remains there, creating a darker rim than the centre. Therefore option C is correct. A dry brush or no water would not create this pooling pattern, and paper thickness is not the likely cause.

Related tags

Wash EdgeDark RimPigment PoolingWater ControlBrush TechniquesPainting TechniquesArt EducationClass 9 Mcq

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