Have you tried every product on the market?
After 2 decades of working with water spots, I have developed my own remedy targeting the hard water specific to the Big Island. With sun, salt water, calcified water, and mineral deposits due to the volcano – I have seen spots unlike I have seen anywhere else! With these combinations, it can cause permanent damage to your windows and/or scratching.
I take my time removing the deposits limiting scratching and increasing clarity. Steel wool and wax has been a remedy in the detailing industry. However, it permanently scratches your windows and decreases clarity – especially at night with oncoming light.
I offer a life time warranty treatment to permanently seal your glass creating a barrier that makes it impossible for spots to adhere!