Can a touch-up pen be used for exposed primer?

[Edwin]

Exposed primer cannot be repaired with a touch-up pen. Here are the specific details about touch-up pens: 1. Exposed primer should not be treated with a touch-up pen, as damage reaching the primer is relatively severe. If paint is applied directly to the damaged area without anti-corrosion treatment, the new paint will not last long, and the vehicle's sheet metal may start to corrode and rust from the inside. 2. A touch-up pen is a tool for repairing minor car scratches. Simply select the appropriate model that matches the original car paint color. Applying the touch-up pen to small scratches or areas where paint has peeled off can repair, conceal, and fill in the damage. 3. The composition of a touch-up pen is typically the original car paint. Since car models vary, different vehicles require specific touch-up pens designed for them.