Once upon a time, it used to be a beautiful day in the neighborhood...that no longer applies to the world of 2006. Good morning, boys and girls. Can you say: Polydimethylsiloxane? Polydimethylsiloxane is a substance that is manufactured by Dow Chemical and is primarily used in food-manufacturing factories as a de-foaming agent for commercial … [Read more...] about Got Pizza Hut? Got Silicone!