The TSA allows you to carry hairspray in your hand luggage but warns that particular airlines or other countries might prohibit it.
I find amusing the chart at http:asi.faa.gov/Docs/HAZMATByPassenger.PDF
It shows a can of AquaNet hairspray as an example of an authorized carry-on item.
It then says it allows "Non-toiletry aerosols that contain non-flammable & non-toxic gas in checked baggage only." This is illustrated by a can of Reddi-Wip.
Is whipped cream now considered an offensive weapon?
"Head this plane to Cuba or I am going to spray the stewardess with whipped cream!"
Shaving cream, on the other hand (or the other side of the face), is allowed in your hand luggage. This is an obvious hole in the entire security process. What if a resourceful terrorist manages to replace the foam in a Gillette can with Reddi-Wip?
There is only one protection against this: Screeners must put all shaving cream to the taste test. A little squirt of shaving cream must be taken from each can and tasted by screeners to ensure that it is not really whipped cream!
Write to your Congressman today and demand this procedure be instituted before there is an aviation dessert tragedy!