Removes stains by micro-abrasion. Whiteness RM, is based on hydrochloric acid 6% and silicon carbide that is extremely hard and sharp, combining a larger effectiveness in comparison to other abrasives, such as pumice, which is soft and not sharp. Therefore Whiteness RM can be considered as a product of medium potency, highly effective, as it combines a medium level of acidity and the effectiveness of silicon carbide. Glam Smile