R&F Blending Sticks have no pigment in them & are a blending medium. They are ideal for glazing colours, can be worked directly into a colour to increase the colours transparency, or used to blend colours together on the surface. Available with drier & 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 & 100ml sizes.