So, I'm not entirely sure what the purpose of this primer is.
It's VERY liquidy, to the point of running off your fingers/hand. It's easy enough to blend, though, given this watery nature. It doesn't make a difference to my skin tone or pore visibility though, unlike say L'Oreal Magic Blur or the Thin Lizzy primer (the latter of which I can happily wear on its own!).
I'm also not sold on its ability to extend the longevity of your make up. Granted, I haven't really given this a good, sweaty night out test, but it's just a little bit too much of nothing for me to rate this at all.