Weekend bro-trips almost, always require all-nighters with events continuing well through the next day. Although the short time back at the room is best spent catching a quick power nap instead of a shower, there's no reason to go back out with a nasty do. The Rockaholic Dirty Secret Dry Shampoo ($16) offers a solution to this problem with a formula that cleans and absorbs excess oils on the scalp and hair, while leaving your head smelling citrusy fresh. Just spray and work lightly into the hair for a clean and refreshed look.