If you don't have a marble tub, wet & forget shower is a no scrub product that will take it off & keep it off.
If you do have marble, Lysol power scrub in the blue trigger bottle partnered with a Mr. Clean magic eraser is great for soap scum. Another way is cut a grapefruit in half & cover with coarse salt to scrub the glass.
Try spraying the glass with vinegar, it can help get rid of the dried water build up and soap scum. If it is real thick, it may take a couple of times.
Hi Beverly. At our old house we had hard water that left our shower doors very cloudy. I tried so many different cleaning products with poor results. Then I tried a product called CLR. Wow, what a difference. The trick to using CLR is to spray it on and walk away. Come back in 20 minutes and wipe with a damp clean cloth. I highly recommend this cleaner. The results are remarkable. Good luck Beverly.
I r tried car snd li didn’t work! However, I didn’t try leaving it on for 20 min.l will try that! Thanks