A recent study has revealed that women who frequently dye their hair may be at greater risk of contracting breast cancer. According to Sunday Times of London, Professor Kefah Mokbel, a breast cancer surgeon at the Princess Grace Hospital has found out that there is 14 percent increase in the disease among women who colour their hair.
"Although further work is required to confirm our results, our findings suggest that exposure to hair dyes may contribute to breast cancer risk," Prof. Mokbel concluded his study.
According to him, women should dye their hair only up to five times a year and he also suggested that women should use products with natural ingredients, such as beetroot.
Finnish researchers found in a separate study that women use hair dye were more likely to develop breast cancer. However, it's not clear whether the products were the direct cause of the disease.
"It might be, for example, that women who use hair dyes also use other cosmetics more than women who reported never using hair dyes," Sanna Heikkinen of the Finnish Cancer Registry told New York post.
Meanwhile, haircare professionals have suggested that women touch up their hair color every four to six weeks.