I bought this from a Swedish retailer . I use shade nw25 for my under eye circles and use nc15 on the rest of my face. Upon application (nw25) it looked good, but a few hours later when I looked in the mirror it was as if I had forgotten to apply the concealer. Where the heck did the concealer go, I asked. How can you call it 24 hour concealer when it only lasts a few hours? It doesn't go well with my eye cream either. When I apply the concealer and pat it with my finger, the product is lifted off and creates patches. The nc15 is ok so I will keep using it until I run out, but overall I'm not at all impressed, and it's my first MAC concealer as well. Don't think I ever will try another one. Originally posted on www.maccosmetics.co.uk