I spent half an hour in Michael's yesterday and another 20 minutes in Lowe's looking for either Gamsol or Odorless Mineral Spirits. Much to my dismay, I didn't find it. I asked my husband where one would look to find OMS, he said any hardware store. Nuh-uh, said I. He said it's basically Turpentine. Is this true? Or is there another product I should be looking for? I really want to try the colored pencil and OMS technique!!!