Protect Fabrics from Dirt and Stains Protect interior fabrics in your car or truck from dirt, stains and spills with Car Glo's Fabric Protectant. This easy-to-use treatment provides a high degree of water repellency and protects against waterborne stains. Fabric Protectant is safe to use on natural or synthetic fabrics and its use will not alter your fabric’s breathability. Maintain your interior fabrics and extend their life with Fabric Protectant. Safe for use on natural or synthetic fabrics. Demo video below!