I’m writing this because I had dark blonde hair all of my life until several years ago. My hair turned dark brown when I was 24 and I’m 28 now. I’m wondering if high prolactin can turn the hair on your head darker because 24 was also when I started to have issues with facial hair. I have PCOS is that means anything. I just started to really increase my calcium intake and vitamin D3. It’s lightened my hair a little bit, but I’m trying to get back to what my hair color used to be.