Rejex Polymer Sealant was originally developed for the Aerospace industry. It was designed to protect the canopy tops on fighter jets. With this uncompromising credential, Rejex has made its way into the automotive industry. Intended to be used on paint, this product gives the finish a super slick feeling and exceptional shine. A unique technique of using polymers is to layer the product for greater protection. After 24 hours, you re-apply another coat of sealant to the paint, glass, wheels, etc. Yes...this product can be sued to protect glass and wheels as well. I'm quite impressed with how well Rejex repels brake dust and makes it easy to clean wheels. Great product that is effective and made here in USA. Don't forget to clay and polish prior to sealing the paint with Rejex.