Bister is a colour pigment made from walnut shells that can be used in different ways with Powertex products.
Bister in a ready to use spray bottle. We have dissolved the crystals in distilled water and double filtered it to give you instant results.
Bister can be used in many different ways with Powertex products. Bister can be combined with Powertex  to make coloured Powertex of your choice 
NOTE- THIS PRODUCT IS MADE FROM WALNUT SHELLS AND MAY NOT BE SUITABLE FOR THOSE WITH NUT ALLERGIES.