If you don't know already, you should avoid products with triclosan and triclocarban. These are commonly found in anti-bacterial soaps, toothpastes, and other products. Not only is it possible that they cause cancer in humans, but we've already seen harmful effects on marine life because so much of these chemicals is being emptied into major water systems after it leaves our houses through drain pipes.

Thankfully I don't see either one in the list of ingredients in my Aquafresh, but I really liked my Aveeno shaving gel...