We're sorry to hear about your experience with the W9 Water Spot Remover. Water spots can vary in severity depending on mineral content within the water droplets and how long they've been on the surface.
If they've been baked in the sun, they can be more difficult to remove. While most wash off easily, a percentage will require a water spot remover like Gtechniq W9, and a very small percentage will require polishing. Please email us at hello@detailstore.com.au if you have further questions and our team will be happy to assist.