Important information about tourism in Costa Rica - Florida

Paul asks: "Have you ever taken the plane with casein? Is it possible to travel with it (either checked in or in carry-on)?"

Paul, there's no problem packing the tubes of casein in your checked luggage. If you want to take them as carry-on, it's also OK because the tubes are smaller than the 3.4 ounce maximum limit. The average Richeson tube is 1.25oz. But be careful because the big tubes of white are 5 oz. or 150ml. 

The good thing about casein for a remote painting adventure is that you don't need to worry about bringing mineral spirits or oil solvent, which you can't take on an airplane, checked or otherwise.

However I would not recommend casein for actually painting in airports, or other enclosed spaces. That's because it has a rather strong smell that not everyone loves. Another thing to keep in mind is that if you paint with it, you'll need to clean up fairly quickly after finishing the painting. If it dries on your brush, the dried paint can wreck the fibers. That's not such a problem with gouache because you can reactivate paint that has dried on your brush.