Geektastic: Uninformative packaging.
We've ended up with two products - hand wash and toothpaste - that contain charcoal.
Neither has any information on the packaging at all to explain why I should want burnt wood in them and what benefits it offers.
There's a story that they used to use charcoal in India (I don't know the reasons) and that when the Colgate company found out about this, they did a big marketing push for "don't use charcoal; it's terrible for your teeth and you should use our toothpaste instead". People gradually switched to the toothpaste and Colgate's profits increased. A discreet period later, they introduced toothpaste with charcoal.
Who knows how true that is though!