Cool Whats The Most Common Hair Color Ideas. Black hair has multiple shades and undertones. By comparison, red hair is rare all over the world, but the highest percentage of people with red hair occurs in the united kingdom.

The united states has predominantly black and brown hair in the population, with 85 percent for black hair and 11 percent for brown hair. Although the united states is the land where they say blondes have more fun, there aren’t very many of them here. Millions of unique hair color shades people wear around the world.