Zep® X-2601 Vehicle Wash is a multi-purpose, moderate foaming, liquid detergent formulated for touch-free and hybrid washing in car, truck, train and bus washing facilities. Zep X-2601 penetrates and loosens road film and bug residues without scrubbing. Rinses completely and freely, leaving a film-free, shining surface. May also be used as the second step in a two-step washing process. Contains no phosphates, caustics, or acids.