Though it’s been hotly debated how often you should wash your hair, another factor to consider is the time of day you choose ...

Is shampooing once a day too much? Is doing it once a week too little? Experts say it depends on a few factors.

Confession: I wash my hair almost every single day. I know, I know—it sounds like a cardinal sin for a beauty editor, up there with sleeping in your makeup and skipping face sunscreen every morning.

Washing your hair can sometimes seem like nothing more than a time-sucking chore. "Shampooing removes sebum or oil that normally coats the hair shaft," Dr. Brendan Camp, a dermatologist at New York’s ...