Women everywhere are no strangers to damaging their hair; yet according to a recent survey conducted by Wakefield Research, on behalf of Head & Shoulders, 91% of U.S. women continue to damage their hair almost every day. In fact, damaged hair is not concentrated to one region. The survey identified 10 US cities and assessed which was in most need of a hair S.O.S., including: 1. Chicago 2. Los Angeles 3. New York City 4. Philadelphia 5. Houston ...