For steel bumpers, do a search for "bumper repair" and look for "Bumper Boyz".
For plastic, visit a body shop. They have ways of repairing plastic but it is usually less expensive to replace them. They have special additives for the paint to make it stay flexible. Those are considered bumper covers.
Oct 27, 2012 at 11:21 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.