Write an article based on this "Open the compact and place it in a plastic, resealable bag."
This will help keep your work area clean. It will also catch any loose bits of powder. If you don't have any plastic, resealable bags, cover the broken powder with a sheet of plastic wrap. Make sure that it is wrapped firmly over the edges, or the powder will escape. This method will use rubbing alcohol. The rubbing alcohol will evaporate, and leave behind the hardened powder. It is considered safe, but if you have very sensitive skin, you might want to consider the method.