In fact, if you are not dropping it from a building or throwing it like a ball, your eyeshadow is still rescueable. Here we made a video to show how to fix it.
Let's take a close up to the eyeshadow when it's crumbled and after it's fixed:
As you can see, Alcohol is the key. Since alcohol will evaporate, it will not affect the quality of the eyeshadow and hence your skin. The colour will still be the same. Isn't that easy?