Marred ceramic nano-particle and scratch-resistant finishes can be difficult to correct, even if the defects appear to be fairly light. Why? Because such paints are physically very hard, and normal abrasive polishes often struggle to cut them back sufficiently. SCHOLL Concepts S17+ solves this problem by using high-purity aluminium oxide diminishing abrasives, which cut strongly to begin with, meaning that you'll correct moderate to heavy defects in no time at all. However, these abrasives then progressively break down to form a polishing rouge that gradually refines the finish. Consequently, it's often possible to correct and refine in a single step, particularly when using long-throw dual action polishers. That said, in cases where time is not pressing, following up with an ultra-fine finishing polish such as SCHOLL Concepts S30+ or SCHOLL Concepts S40 will improve the finish further.