As Chris already mentioned, Optimum Car Wash does not contain any salt. However, table salt (sodium chloride) is used in some soaps as a thickening agent. The amount of salt used in these formulations is in general between 1-2%. Even if someone adds 1 oz. of a soap that contains salt per gallon of water, the level of salt is in the range of 1-2 parts per ten thousand which is negligible for salt. Additionally, as the soap is rinsed off, any salt that was in the solution will be removed. Therefore, in my opinion this is just another scare tactic some use to make a sale. Instead of worrying about salt, people should choose their product based on performance characteristics and not marketing gimmicks. Please let me know if I can be of further assistance.