R&F Blending Sticks have no pigment in them and are a blending medium. They are ideal for glazing colours, can be worked directly into a colour to increase the colour's transparency, or used to blend colours together on the surface. Available with drier and without. Our sticks with drier contain a small amount of Cobalt Drier added to speed up the drying time. The use of a Cobalt Drier can affect colour, so best use is to work colours on top of it after it has been laid down on the surface. Available in 38ml and 100ml sizes.