Top quality pigments, an extremely pure synthetic binding medium and mineral wax. The pigments are ground with an inert, non-siccative binding medium that does not oxidise and that has no effect upon either film stability or surface. This base is then mixed with wax (neutral pH). The balance of this mix provides Sennelier oil pastels with a unique unctuousness and a creamy texture. These pastels are available in 2 sizes. Large size pastels, used for working on large areas, are also available in classic and iridescent shades. Please email us for the availability of larger sizes.