1. Gather your tools and materials. You will need:
* A plunger or suction cup
* A heat gun or hair dryer
* A towel or rag
* A hammer or mallet
* A block of wood
* Sandpaper
2. Prepare the bumper. If the bumper is dirty, clean it with a mild detergent and water. Then, dry it thoroughly.
3. Heat the dent. Use a heat gun or hair dryer to heat the dent until it is warm to the touch. Be careful not to overheat the bumper, as this could cause damage to the paint.
4. Apply suction. Place the plunger or suction cup over the dent and pull inward. This will help to pull out the dent. If the dent is deep, you may need to use a hammer or mallet and a block of wood to gently tap the dent from the inside while pulling with the suction cup.
5. Repeat steps 3 and 4. Repeat steps 3 and 4 until the dent is completely pulled out.
6. Sandpaper the area. Once the dent is pulled out, use sandpaper to smooth out any rough edges. Be careful not to sand the paint.
7. Apply touch-up paint. If necessary, apply touch-up paint to the area to blend it in with the rest of the bumper.