Would a man's black-haired head, exposed to desert sun for 5 months, become a lighter color? How much lighter?

Question

Thanks. But do you know if BLACK hair would change?

Answer 1

Sun can definitely bleach hair. Mine always gets lighter. My daughter spent a year in South Africa, closer to the equator than home, and her dark blonde hair became white.

Answer 2

Probably not. Otherwise, everyone in Africa would be blond by now. It will probably damage/change blond hair. The magic of natural selection...