Does your car have a small dent in it? Before you drop $100 to fix it, grab a hair dryer and some compressed air, and watch this video from 333bony. We promise, you’ll be glad you did.
The temperature change between hot and cold causes the metal to contract and expand popping out the dent to it’s original shape. I have used this clever trick for small indents. For larger more serious dents you still need to visit the auto body shop.