Linn, it might not be the cinn-amint in Tom's, but the sodium laurel sulphate. I loved and had used their products for years when I started having sores on my gums. My dentist told me it was probably from the SLS and recommended Biotene toothpaste. I missed the mint of Tom's, thought I'd try to go back to it and did I ever regret it! I couldn't believe how strong the taste was and really icky to me, plus it bothered my gums right away. I also have to use shampoo which is SLS free and, while that is becoming easier to find, it still is not very prevalent. I went through a lot of different ones before I found one I liked.
Bekka, me too on the dryer sheets. I wish there was one I could tolerate.