I woould like to know what determines our hair color ? Its not only on my head, but even on my face, chin-cheeks (beard), my arms, my body, that that color is is not brown, there are quite a lot of (yellow+red=orange) hairs growing. I was born to have brown hair, differing from my parents and any members in my family. Please tell me, you nice biologists if I need to see my doctor for more advice and even any diagnoses if necessary ? I am really worried.