fixatifs

/ˈfɪksətɪfs/
noun
  1. Sprays or substances used to protect and preserve artwork, such as drawings or pastels, by preventing smudging.
    • The artist sprayed a layer of fixatifs over the charcoal drawing to keep it from smearing.
    • I bought a can of fixatifs at the art supply store for my sketchbook.
    • You should use fixatifs on pastel paintings to make them last longer.