SONAX Car Wash Shampoo Concentrate is a highly effective, phosphate-free formula that penetrates and loosens tough dirt without damaging or stripping the protective layer. The special anionic surfactants within, adhere to dirt particles and act as emulsifiers absorbing and dissolving oil droplets. SONAX Car Wash Shampoo Concentrate is safe for all finishes and leaves a brilliant, clean shine to your paint surface every time!