Repair broken compacts the simple and practically cost-free way: just use a bit of rubbing alcohol and a spoon and see what happens over night.
If your pressed powder, blush or bronzer has cracked into bits, there’s no need to throw it out the window. You could dab the brush against the cracked mess of makeup, or you can repair the broken powder with a few drops of rubbing alcohol. After you add the alcohol, use a spoon to press all the bits and pieces back together. Let the makeup sit overnight, and it will be just as good as new in the morning.