An economical, concentrated, high-foaming liquid detergent which is formulated for brush car and truck wash facilities. It may also be used for the foam brush at self-service washes. Excellent for single-cycle and reclaim-type operations as well. Premium Foam is completely biodegradable and phosphate free. It effectively removes road film, winter salt deposits and heavy soils. Rinses spot free and performs well in both soft and hard water. Produces quantities of high lubricity foam to ensure maximum brush life. It is harmless to all vehicle finishes and will not damage or strip commonly used vinyl top dressings.