13 common mistakes you might be making in the shower

A good scalp scrub can feel refreshing, but you’re actually doing more harm than good if you use your fingernails to wash your hair. “Your fingernails can scratch the scalp and even cause flaking,” says Sandy Johnson, MD, of Johnson Dermatology in Fort Smith, Arkansas. Instead, to properly wash your hair, use your fingertips to work up a lather. It’s also important to avoid aggressively rubbing strands of hair between your hands, which can damage it and cause split ends, she says.