But this staple often comes with a fatal flaw: the whitish gunk it leaves behind in your hair. What's the deal—and how can you prevent it?

The starches in a lot of dry shampoos are great at sopping up oil, but they can leave their grubby little footprints all over your roots.

It's no biggie for blondes, but for brunettes, it's the worst. Try Ouai Dry Shampoo Foam ($28, theouai.com).

It's super stealth: It goes on wet like a mousse, drys in minutes, and uses the invisible silica mineral diatomaceous earth (best name ever, right?) to mop away oil.

This article originally appeared in the March 2017 issue of Women's Health. For more beauty tips, pick up a copy on newsstands now!