Invisible Glass Glass Stripper removes baked-on water spots, hard water minerals, silicones, waxes, oils, tar, tree sap, road salt, and road grime from glass. Contains mild abrasives for deep cleaning auto glass without scratching. Perfectly polishes and strips away layers of rain repellent coatings. Restores glass to its original condition. Excellent surface preparation for rain repellent application. Enhances night and wet weather visibility and improves driver safety. Makes windshield wipers perform better. NO RISK . Invisible Glass s 100% satisfaction or your money back.