If you’ve ever wondered whether or not you can apply a decal on your car when it already has a ceramic coating, the answer is yes but it may not last very long. Of course, you can physically stick a decal right over a ceramic coated car and it will stick on the ceramic coated paint, but because the ceramic coating is intended to be a barrier that repels water and other contaminants with its slick surface, it may be difficult for a decal to adhere properly and stay on for very long. To properly apply a decal on a ceramic coating, you’d need to remove the ceramic coating in the area, apply the decal, and then reapply the coating.