The Koi Blender is a useful tool to mix colors or to fade them a little. The blender has the same felt tip as the other Koi markers but is not filled with color but with water. This way, you have precise control over the tip, just like with the other Koi pens. Ideal to use them in combination with each other!
How do you use a blender?
You can use the blender directly on the paper, just after you've applied a color. You can also hold a colored marker against the tip of the blender so that the blender absorbs some color. Do you want to use the blender again afterward? "Draw" it clean on a sheet of paper.