Knowledge: Brown and blue are the most popular eye colors in the world  while black hair stands out as the most prevalent globally.

Conversation:
I have brown hair.
As a result, your hair has lower levels of pheomelanin and higher levels of eumelanin.
I wonder why brown or darker color hairs are more common than blond or red hair.
The truth is that I also don't know. What I know about the word blond is that it derives from Old French "blont, blund"
What about the words for people with brown hair ?
Well, as far as I know, brown-haired people are frequently referred to as brunette.
Is brown hair color the most popular in the world?

Response: No, black hair stands out as the most common worldwide.