HydroSilex Relax is a ceramic coating for the interior of your car. It can be used on the leather, fabric, plastic and chrome details of the car. The installation is extremely easy and once cured, it creates a transparent top layer that adds gloss and protects the substrate from wear and tear, spills and stains. You do not need to be certified or trained to apply HydroSilex, just clean the surface, spray an even mist and give it a light buff. This product is 8oz.