Optimum Opti-Seal is a revolutionary paint protection formula that creates high level of slickness and gloss with just a few drops per vehicle. One ounce completely seals and protects 4-5 cars! This hyper concentrated sealant will formed a cross-linked polymer instantly when applied. Opti-Seal leaves no residue and requires no buffing. Use very sparingly as Opti-Seal is made to be applied in a very thin layer. Once you get the hang the application method, it is unlikely that you will find any easier way to 'seal' your car. Simply spray, spread evenly and walk away.