Can you get cancer from washing that grey right out of your hair?

A review published in the Journal of the American Medical Association reveals that use of hair dye poses little to no cancer risk.  This conclusion comes from almost 80 earlier studies on a variety of cancers.  However, information on certain shades and types of hair dye was not available for analysis, researchers said. According to the study, a reduction in carcinogenic material in dyes starting in the 1970s might be the reason for the lowered risk.