We use shampoo to clean our hair, so it might be somewhat disconcerting to learn that lathering up with certain ingredients can do more harm than good. But knowledge is power, so learning which ...

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 ...