Fixative Spray. Protect your drawings with Pastel & Charcoal Fixative Spray. This aerosol fixative stabilises charcoal, pastel, pencil and chalk drawings. Spray one to three layers onto your artwork to prevent smudging, fading, flaking and discolouring. Transparent, colourless and odourless, this spray is ideal for protecting work in your sketchbook, exhibiting art and sold work.