I honestly can't do dry shampoo. My friend who has fabulous teased-out, spiky hair gets away with it because she's already rocking the slightly matte hair texture and doesn't want shine or sleekness. But I can't stand the feeling of the powder...I've tried baby powder (when I had platinum hair) and my friend's dry shampoo, and maybe I'm just oversensitive but even when the oil's been sucked up, I can still FEEL the weight of the oil + added product in my hair. I have oily roots + fried ends also, but I would rather do a full shampoo every 2 days and coddle my ends with Redken, CHI and aPHogee than walk around feeling like I have all this stuff accumulated in my hair.
When I'm in a bind and have NO time, I just wash my bangs and blow-dry them. I look a thousand times more presentable than if I was stringy/dirty all over, and it's enough to get by at work without feeling gross.