Most antibacterial soaps(not hand hand sanitizers) have trictosan(spelling?) which is not good for you to begin with but becomes very unhealthy for you when it mixes with something in tap water(i believe it is chlorine). It turns into a gas and you breath it in. Sorry I am a little foggy on the specifics because I stopped using antibac products after I found out about this and that was awile ago so I can't remember the specifics. Also they "overkill" bacteria creating resistent bacteria and diminishing our ability to create a natural immunity to them. As far as hand sanitizers, as someone said before they are mostly alcohol but overusing them is also not good because alcohol pretty much kills eveything including protective bacteria on your skin.