1. fixative - Noun
2. fixative - Adjective
That which serves to set or fix colors or drawings, as a mordant.
Source: Webster's dictionaryYou can't name the inventor of the camera. The 19th-century invention was chemical: the fixative. David Hockney
Abrasive supports avoid or minimize the need to apply further fixative in this way. Source: Internet
A common example is mercury pigment left behind after using Zenker's fixative to fix a section. Source: Internet
A pastel fixative is an aerosol varnish which can be used to help stabilize the small charcoal or pastel particles on a painting or drawing. Source: Internet
For these reasons, some pastelists avoid the use of a fixative except in cases where the pastel has been overworked so much that the surface will no longer hold any more pastel. Source: Internet
Finished drawings made with soft pastels require protecting, either framing under glass or spraying with a fixative to prevent smudging; hairspray also works, although caution should be taken, as fixatives may affect the color or texture of the drawing. Source: Internet