Sennelier oil pastels use top quality, high covering pigments, an extremely pure synthetic binding medium and mineral wax.

Originally In developed in 1949 by Sennelier for Pablo PICASSO who had been looking for a medium that could be used freely on a variety of surfaces without fading or cracking.

The pigments are ground with an inert, non-drying binding medium that does not oxidise and that has no effect upon either film stability or surface. This base is then mixed with a  neutral pH wax.