You can wax or other protective coating to remove the surface paint of your car repair as needed or if you just want the current protection to other products for greater durability or quality of workmanship to offer you a replacement.
The most thorough and effective way to remove car wax or other protection is to paint clay. So there is no surface is completely removed leaving only the bare paint.
You must first wash the car thoroughly for loose dirt and clay dirt, and then completely from top to bottom to remove, working part at a time. After the clay, the car must be rewashed or rinsed again at least that there is no housing to remove.
Clay and wax method of protection is removed so that the surface is free from other impurities, and therefore ensure that the new protection is applied, which adheres well to the surface.
If you do not have the time, or for whatever reason can not clay your car completely remove the wax / protection you need to wash a car with a strong product to break down and remove. You must use a shampoo that contains no wax, and to ensure that you have to use the right amount of time mixing the solution to ensure that the desired effect.
To pre-wash, the entire vehicle is treated with a vacuum or a diluted all purpose remover products designated movement to stop this happening only in the hatched area of the coolest products to prevent drying of the surface protection. Once they are allowed to live for a while you have to rinse the car for the residual product to remove for washing.
You should be able to tell if the wax is removed when the vehicle is actually finally flushed out of the car, because the water does not bead up and run faster than the surface, but remains as a complete body of water.
Depending on the level and quality of the car was originally applied you must repeat this process to ensure that the wax / protection fully removed.