Glass surfaces take a beating—rain, road film, and grime cling tight, making regular car cleaning a challenge. Our Glass Cleaning Clay gives you the power to remove what glass cleaners can't, making it a game-changer for your car detailing routine. Specially formulated for use on glass, this product lifts away stubborn water spots, tar, grease, and oil to restore a crystal-clear finish. If your windshield doesn't feel slick, it's time to use this car windshield cleaner clay. This 3.5 oz bar delivers long-lasting performance and is ideal for windshield cleaning, including tough areas like rear windows on trucks and SUVs. Great for water spot removal, it also works as a great shower glass cleaner and on other smooth, hard surfaces, chrome, ceramic tile, and synthetic stone. It's compatible with our Speed Shine formula for proper lubrication. This cleaning clay is also compatible with our PFM towels, which you can use to buff the surface dry for streak-free results. Whether you’re prepping for polish or simply refreshing your view, this clay bar gives you pro-level clarity in minutes. Clearer glass, longer-lasting wipers, and better visibility—this powerful glass cleaning clay is a must-have in your car care arsenal.