Isaac Mendez Paintings

Hey folks, I wanted to know what are the technical art of the painter Isaac Mendez, as used on the set of heroes, if you're not sure what the painting look like visit this site, 27s_paintings% http://heroeswiki .com / Isaac, painting, I am very interested in the painting is titled
Claire looks frightened, how did he do, oil paint, acrylic, watercolor, acrylic sweetened water soluble oil pastels? any suggestions would be helpful. Thank you guys!

it looks like the water color on paper for me in this picture, but it could be thinned acrylic, the paint, .. in other paintings of Isaac as he finally acrylic colors are so high in fat, .. but im pretty sure Claire 'fear' is watercolor on paper ..