DOVE PRODUCTS-Refill Blender Solution. 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.