Created in the 1940s in collaboration with Picasso, these creamy, lipstick-like pastels are rich in pigment, cover well, and have outstanding opacity and lightfastness. These pastels are available in 110 “classic” colors and 10 iridescent colors. They are acid-free, can be applied to any surface, and may be thinned with turpentine and worked with a brush. Modern Sennelier Oil Pastels’ diameter are 20% larger than the original stick.