This is a painting in progress. I started it yesterday and will want to wait a day or two and look at it again to see what I want to add/change. It is on a 16"x20" canvas and has its origin in a cell phone photo I took this winter at the old LA Farmers Market.
Although I paint in oil, I don't use any turps or turps substitute. Clean up is by wiping as much off the brushes as possible and then washing/rubbing with soap and water. The brushes are actually in better condition than when I used Gamsol.