The manufacturing process of the Sennelier cylindrical pastel does not compress the paste and the pastel dries naturally in open air. The life span of a piece of work is guaranteed by the quality of the pastel, but also by the quality of the substrate. If a lot of overlapping is performed, it is preferable to fix between layers. Avoid, however, fixing the final layer too heavily, as the original tones will be lost.
This set of pastels makes a wonderful art gift for any professional pastel artist, or is a luxurious treat to yourself. Pdf Sennelier Artists Soft Pastels Colour Chart.