All of these brands carry warnings about ingestion. Be careful about slogans like "99 and 44/100 pure". Pure what? I think Wiki has a good article about what is required to call a substance "soap" rather than "detergent."
@Alfred22 The culprit is sodium chloride. But as one article I read once, there is more sodium chloride in some jars of olives than a bar of Ivory soap.
