Page "Gum arabic" Paragraph 10
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Pigment of any color is suspended within the acacia gum in varying amounts, resulting in watercolor paint.
Water acts as a vehicle or a diluent to thin the watercolor paint and helps to transfer the paint to a surface such as paper.
After the water evaporates, the acacia gum in the paint film increases luminosity and helps prevent the colors from lightening.
Gum arabic allows more precise control over washes, because it prevents them from flowing or bleeding beyond the brush stroke.
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