I posted a bit about this in another thread.
The airlines now are on this kick about no lotions, gels, shampoos or basically liquids being allowed in the carry ons.
However, when I asked the airline about carrying on some large martini glasses obtained on our cruise they just shrugged and said "no problem".
All one would have to do is take one of these glasses out of his carry on, break the glass and have a brutal edged weapon as deadly, if not more so, than the ones used on 9/11. As I said in the other post, glass if fine in the carry on but no head and shoulder shampoo lol..Still trying to figure that out.