Autoglym Polar Blast Pre-Wash Snow Foam2.5L is arich snow foam applied using a pressure washer or foam gun as a pre-wash stage. Polar Blast is a snow foam that can be applied using a pressure washer or foam gun as a pre-wash stage. It covers the vehicle in a rich blanket of foam that clings to paintwork to gently loosen dirt and heavy soiling prior to shampooing. This reduces the risk of scratches and swirl marks caused by a sponge or wash mitt moving over heavy contamination. Its pH neutral formulation will not remove any existing layers of polish or wax. How to use Before you start, check that the bodywork and wheels are cool to the touch and out of direct sunlight. Polar Blast can be used at various dilutions depending on the density of foam desired. A good starting point is 100ml product to 500ml water in your foaming bottle. Adjust foam gun settings as required to increase or reduce foam. Spray Polar Blast onto the vehicle, starting at the bottom, ensuring all exte