Chemical paint strippers can be safe to use on car body panels if used correctly. It is important to follow the manufacturer's instructions carefully and wear protective gloves and eyewear. Also, a well-ventilated area should be used to avoid inhaling any fumes. It is important to test a small area before applying the stripper to the entire panel to ensure it does not cause damage. If the paint stripper is left on for too long, it can damage the car's metal or plastic body panels.