Use 100 grams Huge Elastic Poly Clay Bar every day and any day, this ultra-fine clay is smooth and so fine it will help maintain fine finishes delivering a sleek smooth finish. Light enough for everyday use, yet its superior elastic structure cleans even tough contamination without scratching. The Chemical Guys medium duty clay bar was designed for light to moderate oxidation. This medium duty large bar is ideal for jobs with moderate oxidation that you can really feel. It is used for light to medium oxidation, and paint over-spray removal and is able to clean 95 percentage of all surfaces and remove environmental fallout to prepare for buffing and waxing. This scratch-free ultra-flexible elastic bar works great for all paint finishes. Clay lubricant is essential to the performance and safety of clay. It provides the necessary slick surface for clay to glide on. Using low quality clay lubes or cheap detail sprays will deteriorate your bar and lead to poor clay bar performance. Also beware of soapy water as a clay lube, detergent or surfactant based soaps will cause the clay to deteriorate. Chemical Guys synthetic quick detailer is formulated specifically for streak-free surface perfection in the sun or the shade and uniquely formulated to work with the chemical composite of clay bars. Chemical Guys synthetic clay and detailer will extend the life of your clay while delivering superior surface lubricity during claying.