1. Wash the car and dry it first. Shake the touch-up pen before use to mix the pigments evenly. In order to prevent the touch-up pen from being applied to other parts of the car body, it is best to stick both sides of the scratch with self-adhesive before touch-up, so that it is easy to touch up the paint. After the touch-up pen is dry, use fine wax to make it as bright as the original car paint.

2. See scratch of primer. It is recommended to go to the factory for treatment, but there are also some ways to save rust inhibitor and self-painting, which will easily make the sheet metal rust. So the surface should be derusted first. After the car is washed and dried, rust remover should be applied to the scratches. After about a quarter of an hour, the rust remover should be wiped off the clean cloth and then applied. After the antirust agent is applied, wait a few minutes before spraying self-painting. Cover the logo with newspaper before painting to avoid painting elsewhere. Dry naturally after spraying, and then wax it.