Syoss anti-grease dry shampoo
First time i only bought the "anti-grease", but once i tried it and really liked it, i decided to get the "volume-lift". I think i went through one bottle of "anti-grease" and i still haven't finished the "volume-lift". I prefer the green one, because in the blue one there's not that much more volume, but it's certainly worse in making the hair appear more clean.
This product is quite cheap, like 5 euros or something, maybe just below 5 euro, so it's quite good quality for the price i paid. I'd give it a 4/5, but i don't have anything bad to say about it, nor have i tried other dry shampoos, but it's just that sometimes you can see the white stuff everywhere and it sometimes drives me mad. But i do sometimes use this, not as often anymore though :)