On a recent afternoon I tossed a few things into a basket at Target — cereal, graham crackers, kids’ sunglasses — then sat down at the end of an aisle filled with beauty items, placed a hand into a ...

Would you dab perfume on a six-month-old? Paint their tiny nails with polish that contains formaldehyde? Dust bronzer onto their cheeks? An investigation by the Times has found that babies and ...