This is an important step, as over time you will find that cars tend to accumulate small imperfections here and there on the paint job. Polish is quite gentle on the paint job of the car and in addition, this will camouflage all the imperfections that may be present. The best type of polish to be used would be a fine polish. Fine polish will give your vehicle a sleek and wet appearance once the job is complete. Professional Mobile Car Valeting services will typically use a buffer to apply the polish so as to ensure an even coat is applied.