3 doctors weighed in:

How does hair dye hurt your head? Does dying your hair cause brain tumors?

3 doctors weighed in
Dr. Douglas Miller
Pathology
1 doctor agrees

In brief: Barely possible

Some hair dyes contain chemicals that are suspected carcinogens, and these might (not will, just 'might') cause cancers, including brain tumors.
This is not an issue of the dye going straight to the brain because it is applied to the head; the dye would have to be absorbed and then get into the bloodstream to get to cells.

In brief: Barely possible

Some hair dyes contain chemicals that are suspected carcinogens, and these might (not will, just 'might') cause cancers, including brain tumors.
This is not an issue of the dye going straight to the brain because it is applied to the head; the dye would have to be absorbed and then get into the bloodstream to get to cells.
Dr. Douglas Miller
Dr. Douglas Miller
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Dr. Michael Tomeo
Dermatology

In brief: No

No proof that hair dyeing causes brain cancer.

In brief: No

No proof that hair dyeing causes brain cancer.
Dr. Michael Tomeo
Dr. Michael Tomeo
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