Concrete Gray is very reminiscent of Zoya Kelly- a blueish, grayish creme. The good news- this is a one coater! The bad news- the formula is thick and gloopy. I probably should've tried adding thinner to it, but you know that would require me walking up a flight of stairs, and that's just not happening today :)
My hands were slightly wet too, so I had some bubbling on a few:
I then topped it with one layer of Holo Chrome, a blue sheer based polish with fantastic holographic glitter!
For the price, Klean Colors (especially the glitters) are killer! I love them :D