Picture of Remove car dent with a lighter !
I tried this method and work very good on my old dodge.

the video remove car dent witha hair dryer and air duster

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Step 1: Heat the dent

Picture of heat the dent
take a aluminium foil to protect your paint.and warm up with a lighter about 30 to 60 seconds.

Step 2: Metal contraction

Picture of metal contraction
fast apply a throw of liquid air.Hot and cold contracted the metal.

Take your Air duster for computer, and turn it upside down. This way you make liquid air available.
Apply about 5 seconds

Step 3: Now the dent is gone

Picture of now the dent is gone
just clean and its done .This method work good on medium dent.DonT work on polymer car. sorry :)