The chemical triclosan has been linked to cancer-cell growth and disrupted development in animals. Regulators are reviewing whether it’s safe to put in soap, cutting boards and toys. Consumer companies are phasing it out. Minnesota voted in May to ban it in many products.
At the same time, millions of Americans are putting it in their mouths every day, by way of a top-selling toothpaste that uses the antibacterial chemical to head off gum disease -- Colgate-Palmolive Co.’s Total.