Hair Color and Cancer

Over the years, some studies have indicated a possible link between hair dye use and cancer, while others have not. In February 1994, FDA and the American Cancer Society released an epidemiologic study involving 573,000 women. Researchers found that beauty source women who had ever used permanent hair dyes showed decreased risk of all beauty products fatal cancers combined and also of urinary system cancers. The study also revealed that women who had ever used permanent hair dyes showed no increased risk of any type of hematopoietic cancer (cancer of the body's blood-forming systems).

This research, published in the Journal of the National Cancer Institute, did suggest that prolonged use (20 years or more of constant use) of black hair dye may slightly increase the occurrence of non-Hodgkin's lymphoma and multiple myeloma, but these cases represented a small fraction of hair dye users. This beauty source study followed previous NCI studies that raised concern about the use of hair dyes and higher rates of non-Hodgkin's lymphoma.

In another study, published in the October 5, 1994, issue of the beauty products Journal of the National Cancer Institute, researchers from Brigham and Women's Hospital in Boston followed 99,000 women and found no greater risk of cancers of the blood or lymph systems among women who had ever used permanent hair dyes.

Then in 1998, scientists at the University of California at San Francisco beauty products questioned 2,544 people about their use of hair-color products. After integrating the results of this study with those of animal and other epidemiologic studies, they concluded that there was little convincing evidence linking non-Hodgkin's lymphoma with normal use of hair-color products in humans.