The International Agency for Research on Cancer first classified genital talcum powder use as possibly carcinogenic to humans in 2006 – more than 10 years ago. Even earlier – in 1999 – the American Cancer Society recommended women use cornstarch-based products, rather than talcum powder, for application to the genital area. Since then, studies published in several medical journals, including Cancer Prevention Research and the International Journal of Gynecological Cancer, have found that frequent use of talcum powder may increase a woman’s risk of developing ovarian cancer by between 20% – 60%.