Top-selling dry shampoos including Not Your Mother’s and Church & Dwight Co.’s Batiste contain high levels of benzene, the cancer-causing chemical that led Unilever to yank its product from shelves in ...

The first time you use dry shampoo, it almost feels like magic. Greasy, day-three hair suddenly perks up with life and volume. But, if you go too long without really washing your hair (you know, like, ...