I just wonder if hair dye causes a hair loss. My wife dyed her hair tow months ago and over the last three weeks she is having a hair loss. She went to see a doctor and all the blood test were fine. She was given some tablets and a shampoo to use a twice a week to wash her hair. Could anyone please give me more advice on what my wife should do and whether hair dye can cause hair loss. And if yes why it took sometime, about a month a half before her hair started to fall.

Thanks a lot.