I found this foundation very hard to apply. It is very thick and hard to spread out with a small amount so I think I used more than I should have. I must say the coverage is amazing. My skin looked beautiful at first, but when I looked in the mirror close up at the end of the day, it did not look so good. It seemed to make some dry patches look worse and looked cakey. I just bought the sponge for the blush, so I may try using that to apply this foundation and see how it works. The lightest shade in the sample pack is also slighly too light for me and the next shade is too dark, so I wish there were more shades to choose from. It did not break me out or irritate my skin at all and I have very sensitive acne prone dry skin. I may give it another try using the sponge. We'll see.
The trial sizes make it possible to see if you like it or not. I think that all companies should offer trial sizes. I didn't like it very much no matter how I mixed the colors, it just didn't look right on me, but it did feel good on my dry skin. As for the cover up of dark spots, I thought it covered just like any other concealer, you have to kind of cake it on. Also, I had a really hard time trying to blend it, and it is very difficult to wash off. I thought it was difficult to use.