Where to apply ? February 15, 2019 09:45 This solution is designed to be applied over contaminated part of your vehicle after washing process. Related articles How to store the product after use? What is the shelf life once opened? How to use it ? Will Q²M WaterSpot will damage/alter my paint work or coating ? What is it ? After rinsing Q²M WaterSpot my car has still defect on it - Why ?