Hair spray as fixative

My daughter is taking a drawing class in college.  They are only
allowed to use acid-free paper, but the professor recommends using
Aqua Net hair spray as a fixative for graphite and charcoal drawings.
Does anyone know if this product works and if it is archival?
Thank you,

Carol and Jennifer Schaudt

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                  Conservation DistList Instance 10:20
                 Distributed: Tuesday, August 20, 1996
                       Message Id: cdl-10-20-008
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