Pledge, Armorall, and many other products contain silicone in various amounts. Silicone will eventually prevent painting or touching up, maybe even prevent the installation of decals. You have to remove the silicone using a solvent- and that solvent will likely remove the painted-on markings.
Be aware of this, and decide in advance whether you will ever plan to re-paint or re-decal, before you apply any product containing silicone.