Gamsol (odorless mineral spirits) rocks!! If you like to color like I do then this stuff is for you! I used my prisma colored pencils, blending stumps, and gamsol and this is what I got. You color your image with the pencils and then wet the tip of your stump and blend your colored image and you get a soft look with no pencil lines! This stuff is so easy to use and fun fun fun!