Chroma Atelier Acrylic Medium - Clear Paint Medium Mid-Viscosity
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This is the most popular existing Atelier painting medium and sits between the Middle Medium and the Thin Medium on the Viscosity Ladder. When mixed with Atelier Interactive, you create easy-to-manipulate mixtures that are also useful for edge blending wet over dry, for scumbling and for glazing. You can over paint layers once they are dry, but you can also use the Unlocking Formula to extend wet blending.