Brosnahan claims to have tried upward of "1,000" dry shampoos, and has yet to find anything better than the Pssssst! Dry Shampoo ($5). "I have colour-treated hair that's naturally curly, so I try not to wash it very often. As a result, I try to use dry shampoo more than the full shampoo/conditioner thing. I'm obsessed with Pssssst! It doesn't leave a residue, which is less important for me right now because my hair is blond, but when I was a brunette, I had a really hard time finding a dry shampoo that didn't leave white powder in my hair. I've tried everything, and this one remains the best one for me. I have it all over my house."