I LOVE my Prismacolor pencils. I have the 120 set and Gamsol. I've never had very good luck blending with Gamsol for some reason. Today I bought a bottle of baby oil and tried that. It worked so much better for me. The colors just floated over the paper and blended effortlessly. I am 100% sold on using baby oil. AND it is SO much less expensive than Gamsol. Thanks ladies for your experiences and impressions!