Clean the dented area
Assess the dent size and location
Use a plunger on shallow dents
Apply hot water to plastic bumpers
Use a hair dryer to warm the metal
Spray compressed air on the warmed area
Use a dent puller kit
Apply dry ice to the dent
Tap the dent out gently from behind if accessible
Use a rubber mallet and a block of wood
Remove interior panels if needed
Use body filler for deeper dents
Sand, prime, and repaint the repaired area
Take the car to a professional repair shop