LizardSkins car Ceramic Insulation is a premium spray-on thermal insulation product for all cars, trucks, street rods, customs or race cars --wherever heat is a problem. LizardSkin Ceramic Insulation (CI) is an advanced, water-based composition of a high-grade acrylic binder with ceramic insulation particles to create a thermal barrier. With LizardSkins spray on auto insulation, heat entering the interior is reduced by 30°F or more, making for a cooler, more comfortable ride. For maximum auto thermal performance in your ride, encapsulate the entire interior and all appropriate exterior surfaces.