Dove Blender Pen Blending Medium 1oz by Dove Products The Dove Blender Solution is a revolutionary blending medium, specially formulated to make "floating" or blending colors easier. Works great with all waterbase markers, colored pencils, chalks, dye ink pads and pigment ink pads. Use this solution to refill Dove's Blender Pens (not included) or straight from the bottle, with a brush, dropper or spray bottle. This package contains one 1oz/29.5ml bottle. Made in USA.