Here's a few products you can use to keep your custom shower glass enclosure clean and spot free, as a professional installer in the Glazing industry there 2 simple things a person can do to keep that shower glass look clear and spot free.
1. water spot prevention, using a nano coating technology every month will help with stopping water spot build up and streaking. using a product like diamond blue repellent found on amazon will help keep that shower glass clean and clear.
2. Squeegee, one of the simplest things a person can do is to keep their shower clean and spot free is just squeegee off water after every shower clearing off old build up.