This is an opaque concealer that comes in a clamshell like package and contains 3 colours, a pale colour, a medium and a yellowy ivory colour. The idea is that you mix your own colour. In theory this is a good idea for changing seasons etc, however I found it very hard to do. I may be easier if I had some sort of palette, as using the back of the hard, most of the product just sinks in and is wasted.
The product can appear cakey on the skin, particularly under eyes, I advise it be used lightly or stippled on. I currently use this for covering spots, but use a green concealer under my foundation as I dont like using too much of this particular concealer. It would much prefer to have a concealer that was my shade, than having to mix.