We’ve touched on the origins – and, thankfully, evolution – of the toothbrush, but have you ever wondered about the history of toothpaste? Unsurprisingly, the Egyptians – who also used urine to whiten teeth – were among the first to develop a form of toothpaste. In 5000 BC, pumice, burnt eggshells and powdered oxhooves all were a part of this teeth “cleaning” formula.