Painting Teacher Question:

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A liquid, that may be shellac in methylated spirits or synthetic cellulose solution, that is intended to be sprayed as a fine mist on to charcoal, soft pencil, chalk or pastel to consolidate the drawings and prevent smudging. This spraying must be done with care because too heavy an application can flood and float the drawing away. Tests should always be made with pastel as it is likely the fixative can alter tone and tint values.