Hair dyes

Used by one third of women and 10% of men over the age of 40 years.

Some of the aromatic amines contained in hair dyes are mutagenic and carcinogenic.

Do not effect the risk of breast or bladder cancers.

Associated with a borderline effect of the risk of developing hematopoietic cancers.

Recent  studies suggest the use of permanent hair dye increases breast cancer risk to a greater extent among black women then among white women. 

The use of hair straightening products also increase breast cancer risk.

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