Have you ever wondered why silicone is bad for your hair? Read this article slowly & carefully, it may answer some of your questions. What is silicone? Silicones are synthetic polymers. In layman’s terms: synthetic polymers are derived from petroleum oil and made by scientists and engineers. The word POLYMER is a more technical term for plastic! Which brings me back, again, to the same question: “Why would anyone want to put petroleum oil or plastic on their hair or skin?”