A: Dent pullers are most effective on shallow dents with a smooth surface. They may not work as well on creases, wrinkles, or complex damage to the body panel.

Sharp dents are one of the few dents that most often cannot be removed via paintless dent repair. These dents occur along the body lines of the car and are often deeper than round dents. They are also tighter than round dents, making them harder to repair, especially if they are in a difficult spot.

The so-called PDR technique (Paintless Dent Repair) is the less aggressive way to erase dents from vehicle sheet metal, as it doesn't involve using sandpaper, fillers or paints that reduce the value of the vehicle. Instead, the repair process is carried out with tools that won't adversely affect it.