Can hair dyes and chemical hair straighteners increase breast cancer risk?
As the beauty and cosmetic industry evolves, many new skincare, haircare and hair styling products continue to flood the market. However, the safety of some of these products has come under scrutiny, in view of their potential health implications.
A study conducted by National Institutes of Health (NIH) and published in International Journal of Cancer in 2019 had revealed a concerning association between the use of permanent hair dyes and chemical hair straighteners and an increased risk of breast cancer.
The study found that women who used hair straighteners at least every five to eight weeks were about 30 per cent more likely to develop breast cancer. It also found that using permanent hair dye caused a 9 per cent increased risk of developing breast cancer compared to non-users.
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