Cerium Oxide Compounds maintain and deliver a uniform particle size, on average 3.5 micron, and a high concentration of rare earth oxides to provide the brightest possible finish in all applications. These compounds exhibit exceptional suspension quality, required for use in today"s recirculating slurry systems. The added benefit of soft settling means glass and equipment are more easily cleaned and maintained. A superior quality compound meaning you only need to use small quantities at a time to achieve outstanding results, Glass Polishing compound already mixed and ready for use. This compound has excellent suspension qualities and will not harden go off or separate like other cerium oxide compounds. Contains no zinc oxide, and meets most local disposal ordinances. Please note for scratch removing : if you can feel the scratch with your fingernail it is probably too deep to recover with compound and abrasive process might be required. Please remember : glass is a very hard surface and polishing process might be time consuming. Not for use on gorilla glass (phones/tablets). Please Contact us if you not sure if this is the right product for repair required.