Add Yahoo as a preferred source to see more of our stories on Google. Reporter Deborah Vankin receives a Chinese scalp treatment at Tou Dao Tang head spa. (Dania Maxwell / Los Angeles Times) I've ...

I’ve never given much thought to my scalp. Aside from the occasional subconscious scritch-scratch or vigorous shampooing, it’s kind of just … there. A necessary but often-overlooked cranium cover. But ...