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.
This is now offciailly my favourite primer. It's quite runny and goes on thinly, makes my skin feel smooth, and then my make up goes on smoothly over it. It makes my makeup last much longer before needing a retouch,
Tips: Careful when you pump the top, it comes out quite quickly.