If you have a cigarette burn on your car headliner, there are a few things you can do to help. First, clean the area with soap and water. This will remove any built-up dirt and debris that may have caused the burn. Second, apply a light coat of paint or sealant to the area. This will help to protect the headliner from further damage and make it more resistant to future burns. Finally, use a heat gun or an oven to heat up the area until it is melted away. This will start to work as a temporary fix and should be used as a last resort if other methods fail.