What does research say about talc, hair relaxers and ovarian cancer?
FDA says some studies point to a possible link between talc powder used in the genital area and ovarian cancer. But FDA says the studies have not proved it. The National Cancer Institute says there is no clear evidence of a higher risk.
Many talc lawsuits claim the powder held traces of asbestos. The National Cancer Institute reports that a world cancer agency found enough evidence that asbestos causes ovarian cancer. That finding is about asbestos, not about talc itself.
In 2020, the judge in the federal talc cases let the women’s experts testify that genital talc use may cause ovarian cancer. Letting experts testify is not a finding that talc causes cancer. In January 2026, the same judge, now retired and chosen by the court to review the experts under newer rules, again advised letting much of that testimony in, while leaving out some theories.
In June 2026, the women in the first test cases withdrew their experts on what caused their own cancers. In July, a judge granted the company’s request to make the women in the federal cases show why their cases should not be dismissed. The judge said this would show which claims have merit. On July 29, 2026, the judge put the case deadlines on hold while the parties report on talks to resolve the cases. As of October 6, 2026, the deadlines were still on hold. In the court records we read, we found no ruling on the January advice.
Juries in some talc trials have ruled against the company, and many of those verdicts were later reversed on appeal. We found no federal court ruling that talc causes ovarian cancer.
An NIH news release says its research team earlier found that hair straighteners may raise the risk of ovarian cancer. A study like that shows a link, not proof of cause. We found no federal court ruling that hair relaxers cause ovarian cancer.