I bought this as my first primer purchase, because I'm not entirely sure what the product was meant to do, and also not convinced I needed it.
It goes on lovely and smooth and your skin feels quite silky with it on. Makeup went on quite well over top too. Didn't feel any different than without primer, but assumed it would help the makeup hold a little longer. I can't say I noticed my skin looking any better, or lines looking less noticeable. It was just okay.
For the money spent it was hard to be disappointed but it didn't sell me on the whole primer idea.
I was expecting great things from this primer but it really let me down. I have quite dry skin, and very crepey under my eyes, so I was hoping this primer would allow my concealer (I don't wear foundation) to glide on smoothly and help fill some of the lines so I'd get better coverage out of my concealer. Unfortunately it did none of those things. The silicone base was very off-putting too - it FELT smoothing, but didn't LOOK smoothing (if that makes any sense?). In any case, I moved onto another primer after only using it for a few days. I gave this one to my teenage daughter (combination skin, prone to break-outs) and she loves it! At least one of us is happy :-)