Is there a rule against tossing two or three 3 oz. bottles of the stuff into the quart-sized bag so I have enough?

Response: Whatever fits into a quart-sized bag should be fine as long as each of the individual liquid/gel-containing containers inside the bag do not individually appear to exceed 3 oz.

Hmm. If I were someone who played mental "what if" games, I'd be unconvinced that this tactic improves my safety. What's to stop a bad guy from filling nine 3 oz. containers with something dangerous (cough), thereby taking 27 oz. of threat aboard?

Mind you, I'm happy that it appears I can take enough shampoo on my trips.