Winsor & Newton Artists' Aerosol Transparent Fixative
To preserve works for the long term, or momentarily to prevent smudges while working, this colorless medium can be applied to works of charcoal, pastel, pencil and chalk immediately. While the fixative is durable and protects the surface of drawings, it can also be applied while working, as a medium. Fixatives also enable the top of the surface to be continually worked by the artist. This transparent fixative will not affect the color of pastel, although it may darken the color tone, yet at the same time it improves the adhesion of particles to the surface and lightfastness. It is available in a convenient 14 oz. aerosol spray that makes applying thin coats of protective layers to the surface of drawings precise and quick.