Bumble and Bumble Pret A Powder Shampoo
For days when you'd just rather not wash your hair at all (ahem, every work day), dry shampoo is an absolute necessity. There are a million options out there but I like Bumble and Bumble's powder that doubles as a volumizer when you can use some extra oomph. It also doesn't poof everywhere and make a mess like most powder dispensers.