The TSA Website regularly offers features and tips on travel, and you’ll be better prepared if you check in before trips. Rules are starting to stabilize after the dramatic security changes created by the 9/11 terror attacks on the USA, but unless you fly regularly you may be unpleasantly surprised by some of the rules.
The most important change since 9/11 has been the liquids rules, which restrict the amount of liquid you can bring through security. I think the simplest approach if you check bags is to place your gels and liquids there, but if you need to carry them be sure they conform to the rules or you may loose that expensive new shampoo you just bought for the trip.
Liquids rules from TSA – remember it’s 3-1-1 3 ounce or LESS container in a SINGLE ONE QUART clear bag. You may place several containers in the same quart clear bag.