How To Blend Coloured Pencils: ZEST-IT Review & Demonstration - YouTube
Product Review - Zest-It Pencil Blender - YouTube
Jackson's Art - The smoothest shading results can be most easily achieved by using Zest-it Pencil Blend. It is a solvent that will break down the oil and wax content of pencils,
Zest It 250ml Solvent (Citrus Free) - Art Supplies materials and equipment
Zest-it pencil blend | Product Review - STEP BY STEP ART