Okay, the cornmeal has been in my hair for 18 minutes now, with a shower cap covering all.  I picked out all the weevil maggots I could find, and the clots of cornmeal+webbing.  This is some cornmeal that my brother left in the cupboard rather poorly covered, so I won't consider it waste.
The cornmeal doesn't stay in the shower cap all that well, and on my dark t-shirt, it looks like I've got a serious case of chunky dandruff.  But we're talking survival, right?
I think I'll give it an hour.  The cornmeal is now migrating down my neck.  At least I think it's the cornmeal.
Breaking news will be reported as it happens.
Sue 
Sue, I love that you are "taking one for the team" here.  

 ROTF. You are truly dedicated to the cause. I look forward to what will no doubt be an entertaining final report. 
