Daler-Rowney Perfix Colourless Fixative is an excellent quality fixative spray that fixes charcoal and pastels. It sprays evenly with a minimal effect on tonal values and is easy to use. It dries quickly to prevent smudging and once dry it's completely colourless so you can continue working on top of it.Fixes charcoal and pastels.Quick drying to prevent smudging.Completely colourless once dry.