I didn't wash my hair for two days after I got it done at the salon (nearly unheard of for me) and I only needed to use a touch of Unite's 7SECONDS Dry Shampoo on my bangs. That's it. The rest of my hair was flawless and not greasy in the slightest. Just sprinkle a little bit of the magic fairy pixie dust, er, I mean EXPANDA Dust Powder, on your roots (a little bit goes a LONG way) and voila! Beautiful hair with tons of volume.
If you can find it, I highly suggest buying it. It's my new go-to hair product!