Email him and ask if he'll send you an MSDS sheet. And good luck getting one!! I've never been able to, nor have several friends of mine (and, no, he could not tell from the email address I used that I work for Meguiar's)

Of course the MSDS is not a comprehensive ingredient list, only those things required by OSHA etc due to potential health issues, among other things. But it will list silicone use as well as certain solvents, and the quantity present.

Don't get me wrong, I happen to like Zaino products quite a bit and used to use them exclusively. I eventually came to the conclusion that I can get the same, or better, results with many of his competitors products and usually for less money and less hassle. Still, those who are fans of Sal's stuff tend to be extremely loyal. Fine by me - I'd rather see someone use Zaino on a regular basis (or Pinnacle, or Mother's, or Turtle Wax) and baby their car than just take it to a car wash once a week and call it good. THAT I have a problem with.