Renny Doyle Double Black Pearl Auto Shampoo is perfect for use in a foam gun, foam cannon, or a simple hand wash. The strong foaming agents used in the formulation of Renny Doyle Double Black Pearl Auto Shampoo ensures that you will always get an even coat of foam no matter how you apply it to your vehicle. These features make it the ideal choice for an auto shampoo whether you are a professional detailer with a high volume of cars or simply a weekend warrior washing their car in their spare time.