This product is so easy to apply, goes on creamy and smooth and dries nice and quick, so I'm not fluffing around waiting. It's a nice neutral colour so it's not going to change the colour of your eyeshadow. It evens out any colour differences in your eyes, e.g. blue veins, dark spots etc.
It's a small amount of product for such a big price, so I only use it when I need my makeup to last all day and night, and can't touch it up. This product does this for me, I literally don't have to touch it up at all, even after 14 hours. My eyeshadow didn't blend together (meaning, the three colours didn't all become one), slide down my eyes, crease or anything. It looked like I had just applied it. It also makes my colours more vibrant and "clean" looking.
For such a big price for little product, despite the fact I love it, I wouldn't recommend to all people, as I know a lot of people's budgets won't allow. I think this is something that if you can splurge a bit, scrape up the money, it's the first thing you should be thinking of.
I like this concealer a lot. It makes my make up look so much better. It easaly covers the dark circles under my eyes amd give me a good look.