A time-tested technique for removing small car-dents can often be accomplished with a household plunger. Small dents and dings are inevitable for some drivers, but you can quickly remove a dent if the damage is not severe. Keep in mind that the household plunger won't induce a miracle. A plunger will not help with a large dent, or one with extensive paint damage.
Clean the area around the dent with soap and water, wiping away all dirt and dust. Use your cloth to completely dry the area. This will give you a better view of the dent and help determine whether it can be repaired via the plunger method.
Apply a small amount of petroleum jelly to the bottom rim of your plunger; this will allow it to form a better seal when you place the plunger over the dent. The tighter seal allows the plunger to create more suction.
Place the plunger directly over the dent and firmly push it into place. Make sure the plunger covers the entire dent.
Push in on the plunger to create suction. Quickly pull out with the handle to "pop" the dent.
Inspect the area to see if the dent popped out completely. If it is only partially repaired, repeat the process.