by Andrew W John

DEBATE HAS LONG RAGED OVER WHICH HAIR DYE ingredients pose a health risk. If you want a dramatic color change or permanent coverage, avoiding all questionable ingredients is difficult. One of those questionable ingredients is p-phenylenediamine (PPD), found in many permanent hair colors. Mary Beth Janssen, a beauty consultant in Palatine, Ill., and author of Naturally Healthy Hair, says PPD is the cause of most allergic reactions Read more »