It has a slight tint to it, but when I apply I really don't feel this makes a huge amount of difference. It has the usual drying effect of every other primer I've used.
But I hardly need to use any at all to get the job done, which is awesome for a more expensive item. And it applies and blends in smoothly.
Besides that, what I'm looking for in a primer is something that will hold my foundation all day and fill in my pores as much as possible. This is the only one I've found so far that does both. Even with my pore test, under the Rimmel Lasting Finish full coverage foundation, it smooths everything down. And it keeps any foundation completely in place for me until the end of the work day. Even at the end of the day it's just my oily spots that have started to show through a bit. No smell either!