What is Zest-it Pencil Blend and how do you use it?
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,
How to Blend Colored Pencil Drawings with Rubbing Alcohol - EmptyEasel.com
Zest It : Pencil Blend : Citrus Free : 125ml | Jackson's Art Supplies
Solvents
How To Blend Coloured Pencils: ZEST-IT Review & Demonstration - YouTube