The soapy water will help loosen the dirt and make it easier to wash away. As you brush, you'll notice the satisfying sight of foam covering your car. This foam is a sign that the soap is doing ...

When the car enters the car wash, it’s sprayed with a pre-soak detergent solution, which loosens dirt and grime. To make up for the lack of direct brush or sponge contact, touchless car washes ...