Protect your hands with a pair of leather or cloth work gloves, and open the windows in your home to ensure that the space is well ventilated.
Lift up a small plastic container with one hand and a small piece of dry ice in the other. Keep the dry ice over the plastic container as you work.
Hold the container under the piece of dry ice and press the dry ice over the dent on your fridge for approximately 15 to 20 seconds. If the dent is small enough, the sudden temperature drop will contract the material and make the dent pop back out. In some cases, you may need to alter the position of the dry ice over the dent to get it to pop. If you have tried different positioning with the ice and do not see any results, the dent is too large to be corrected with this method.