You could try using vinegar. It tends to break down soap scum.

Use a shower screen product with a cheap exfoliating glove. The roughness of the glove loosens all the grime. Rinse to reveal a shiny shower screen.

Just use morning fresh with REALLY hot water! Does the trick.

The reviews on fertility healthy clean bathroom are good. I would give that a try

You need to use the Dettol Healthy Clean Bathroom Rapid Foam which was trialed on this site. it is really good for removing soap scum. Give it a go.

I use gumption all over and let it sit for an hour or so then scrub and rinse thoroughly.

I did it – I googled snd found that liquid furniture polish rubbed on the glass works. My glass was white all over with build up and is now gleaming clear like new! I used coles cream cleanser after it ti remove any oily residue so for a little bit of work I have a super result!! Oh and Alsi microfibre cloth was awesome too (pack six five bucks)