Shoppers have long been able to use nutrition labels to choose low-salt meals or reduced-sugar cereal. Now some companies want to use labels to help them pick everything from shampoo to milk, based on ...

That shampoo you’re lathering into your hair may claim that it’s packed with “all-natural ingredients,” but the label tells a different story. DMDM hydantoin? Ammonium lauryl sulphate? What is this ...