I honestly think I have tried every dry shampoo available and this is still the one that I always end up using!
I do find it leave a little bit of white powder, but it smells much better than any of the others and doesn't leave a 'film' on my hair and actually makes it looks clean (unlike one I tried where my hair looked greasier after I used it!)
I love the little sized bottles - I keep it in my handbag all the time - as well as a full sized one at home.
This stuff is amazing and better than all other dry shampoos I have tried it's easy to use spray on the roots and give a rough up then you're ready to go! Also added volume!
Tips: Make sure you abide by the spray 5cm away :)