Our snow foam is an alkaline based safe to use snowfoam prewash. Designed to loosen and soften dirt before the shampoo process begins. Use your snow foam lance setup or pump action sprayer to apply. Let the product dwell for approx 5 mins and simple spray the product off the car. Do not let product dry on the vehicle and try to avoid using in direct sunlight. For our 'non alkaline' based snow foam please see our product labelled 'Neutral'. See label for mixing ratios.