My hair has always been dark brown but for the past 2 years I've been getting red and blonde hair. I don't know what's causing this or if it's natural.
https :// www . allure . com / story/brunette-to-blonde-naturally
There are some natural causes to it, yes, but depends on extent, and some . I've read once, for example, that beard hairs tend to have more anomalous lightness due to a shorter lifecycle of the pigmentation, though I can't find the reference atm. Several articles mentioning a certain deeply nested gene manifesting.