This is not the one. I liked how it sprayed on clear (it really is invisible), but unfortunately, it didn't really seem to do anything. My hair was maybe minimally less greasy after applying it according to the directions. However, it didn't make anything worse, so this could be worth a try for others.
I especially like how Sephora offers different sizes. I only spent around $10 on a small can, which will probably be good for about ten uses. (I've already used it three times and it still feels heavy.) They have an even smaller size now for only $5.
This dry shampoo smells pretty good. Sort of fresh and lemony. It's not volumizing, which was promised on the can. Like I said, no real difference, one way or the other.
tl;dr: Get a super small size and it might be worth a try. Goes on clear, but doesn't do much else.