A salesman came to the shop I once worked in, a big federal shop during one of the water shortage periods. He said he had a miracle car treatment that would shine the paint and make dirt fall off so you never needed to was the vehicle again.
He almost had my boss ready to buy into a contract for his stuff until I was asked what I thought and I asked the guy for an MSDS.
A week later he provided us the MSDS - kerosene and water, about 20% kero. No sale. That guy jabbered at me like an escaped rhesis monkey.
Point is: There's always a new miracle cure, and there's a sucker born every minute to buy them.