A new study has found an association between hair-straightening chemicals and uterine cancer, leaving many women who use the products with questions about the safety of the popular hair-care routine. In the study, women who used hair straighteners more than four times a year were more than twice as likely to develop uterine cancer than those who did not use them at all. The findings are viewed as preliminary, and study researchers, as well as other experts, share how people who use hair straighteners should react to the news. Read more from reporter Lindsey Bever (@by_lindsey_bever) by tapping the link in our profile.