I’m researching a hair story for a national magazine, and the experts I’ve been interviewing keep waxing poetic on the healthy-hair benefits of coconut oil. (To clarify, they’re not advocating you eat food cooked in coconut oil, though that’s not a bad idea. Rather, most are suggesting you slather it on like a VO5 hot oil treatment.) My stylist Nunzio Saviano has been touting the benefits of coconut oil for a few years, so its accolades are not new(s) to me. But, given that several experts offered up coconut oil as a “surprising” source of good-hair health, it seems word is not getting out...