Water Spots on Matte Paint

[BMGz33]

Hello everyone.... havin a tough time removing hard/etched water spots off of my 17' Camaro SS 1LE's hood

I bought some matte cleaning spray from chemical guys hoping that will do the trick...

I received the car like this btw.... it seems they washed the car and didn't bother to dry it well and the water spots got etched into the hood's paint

[Buster906]

OPT has a product called MDR MINERAL DEPOSIT REMOVER. Check Autopia and Autogeek

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[denisefrank]

I normally use white vinegar or lemon for cleaning the hard water spots. I apply the white vinegar + distilled water or lemon on the window and allow it to sit for few minutes. Reapply the solution again and then scrub the glass tightly with a towel. Some of my friends use toothpaste for cleaning the hard spots but I haven't tried it yet.
The best thing you can do to avoid the hard water spot is not allowing the water to rest on the window. Clean the window with a dry cloth if you see any water on them. I read these tips from an emergency cleaning service providers website. I think water repellant products are also available in the market. I haven't used those yet. Heard that such products work well.