I have very fair skin with cool undertones, but the cool shade turned out to be way too pink. However the neutral shade is perfect on me. When I first put it on it looks a bit too light, but after a moment it seems to disappear into my skin. I love the texture too - very liquid and extremely easy to blend. The coverage is light, so it takes a few layers to cover major red spots, but that's okay because it layers beautifully and never looks cakey. The packaging isn't perfect - it sometimes leaks a little bit and the attached brush picks up way too much product, but I don't mind because I prefer to use my finger anyway. Some other concealers have better staying power but this stays on fine if I set it with powder. After my first tube ran out (it lasted me about 4 months) I immediately repurchased because none of my other concealers match as well or blend as easily.

This is the BEST concealer I have ever tried. It looked and feels like my natural skin.

This is a good formula. The downside is that the concealor only comes in 3 shades. So there is quite a large color gap between N1/2/3 and N4/5. I ended up having to mix the two to get an inbetween shade.