Pastel fixative | Article about pastel fixative by The Free Dictionary
pastel fixative[pa′stel ′fik·səd·iv]
A thin varnish material for the simple and even application to drawings; only enough fixative should be used to keep the pastel particles from falling off the paper.
References in periodicals archive
Wynfield's use of the same technique for photographic portraits therefore makes complete sense - it was a case of developing fluids against pastel fixatives