Creative Craftlab Twin Tip Markers Alcohol-Based Colorless Blenders (CCL-ES-MARK18)

Creative Craftlab Twin Tip Markers Alcohol-Based Colorless Blenders (CCL-ES-MARK18)

The color "0" is basically an alcohol marker without any pigment, so when you add it on top of a color, it will move the pigment around. This way you can blend/add highlights after coloring!