If you're a total klutz like me, you've broken more than a few good eye shadows. This is an emotional subject for me, as I am almost constantly dropping my fave powders on my bathroom floor and often shatter my heart in the process (okay, that might be a little over dramatic). But honestly, there is nothing worse than shelling out $20 for a new shimmery shadow only to watch it fall and break into tiny little pieces. After years of crying over spilled eye shadow, I've found a tip that actually seems to work fairly well.
First, add a few drops of rubbing alcohol into your compact. Then, take a bit of saran wrap and gently smooth the powder into place. The added liquid forces an immediate bond and the alcohol dries up in moments, leaving behind a nearly perfect powder.
Water will not have the same effect, as it does not dry the same. I've also heard of people using petroleum jelly, but that actually makes the eye shadow appear greasy.
If the powder is broken up beyond repair, you can always completely break it up and simply use it as a loose eye shadow.