This happened on the windshield after applying a water repellent
Windshield Water Repellent: Aquapel® Glass Treament - Ziebart
This happened on the windshield after applying a water repellent spray. : r/Detailing
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Windshield water repellent - Page 3
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Windshield water repellent fail : r/AutoDetailing
Water spots on windshield won't come off? I Just Found the Fix!