
We have shower doors in our house that have accumulated over 20 years from hard water. I've tried vinegar, a mixture of vinegar and dish soap, scraping with a razor blade (bad idea), and muriatic acid with little or no results. However, this A-Maz cleaning paste really helped remove the buildup. Glass literally looks new. It takes time and effort, as well as repeated application, especially in areas where limescale has actually built up. Be sure to purchase the included sanding sponge and moisten it before and during use. I applied the wax once the glass was clean - let's see if it helps against mineral deposits, but if not I'll reapply the cleaning paste.

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