It was almost 4 p.m. on a recent Thursday when I realized I had a velvet scrunchie in my hair that I had no recollection of putting there. That could, of course, mean only one thing: It had been there since I piled my hair up early that morning while getting out of bed. In other words, I’d gone all day without brushing my hair — or even considering it. A year ago, this would have been unthinkable.