Prewash Tixotrop is a product with a unique gel consistency, thanks to which it increases its effectiveness in removing asphalt, road salt, oils and heavy dirt. Thanks to the gel form, the product does not flow from vertical elements, resulting in greater effectiveness.
Simply spray onto the vehicle and leave for 30-60min depending on how much tar / dirt is on the vehicle, often you can leave on overnight if the vehicle is covered in a large amount of tar/ dirt to ensure it works properly.
Simply use your finger to test how loose or how easily the tar / dirt rubs off. If it is coming off easily then just pressure wash the whole vehicle.