To clean glass shower doors effectively, create a solution of equal parts white vinegar and dish soap in a spray bottle. Apply to doors and let sit for 10 minutes to dissolve soap scum and hard water deposits. Scrub with a non-abrasive sponge, then rinse thoroughly with warm water. For stubborn mineral buildup, make a paste with baking soda and water, apply to problem areas, let sit for 15 minutes, then scrub and rinse. Prevent future buildup by using a daily shower spray or squeegee after each use. For best results, read out article about how to clean glass shower doors?