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 Will Q²M WaterSpot will damage/alter my paint work or coating ? How to use it ? After rinsing Q²M WaterSpot my car has still defect on it - Why ? How to store the product after use? What is the shelf life once opened? What is it ?