Sennelier - Delecroix Aerosol Fix - Delacroix fixative is the perfect spray fix to seal and protect pencil and charcoal drawings. Delacroix Spray Fixative is a totally clear, non-yellowing matte film that fully protects against smearing. Specially formulated for work in pencil, charcoal and graphite powder. While similar to Latour fixative, Delacroix is stronger and therefore not recommended for soft pastels.