Regardless of which one is the most common, all hair colors are beautiful.

Large-scale crossovers of cultures and ethnicities tend to increase genetic variation because children inherit major traits from their parents.

Take hair color, for example: different hair colors stand out in specific areas. The most common hair color in one area can be very rare in another part of the world.

Here's a list of the most common hair colors in the world, as well as where these genetic variants occur most often:

1. Black hair

Black hair is the most common hair color in Africa, Asia, and Europe between the northern border of France and the southern border of the Baltic states. The U.S. population reflects this change, as many citizens migrated from these areas.

2. Dark brown hair

Brown hair is another common color in the dark hair spectrum and is found in people with low levels of melanin. Women with this hair color are often referred to as women with dark hair. Most of the region, including Central Europe, Western Asia, and North Africa, is considered a dark-haired region.

3. Light brown hair

Just like strawberry blonde and chestnut hair, this category is common in areas where light and dark hair have been mixed for generations.

4. Russet hair

Similar to other hair colors that fall between black and blonde, russet hair is a unique mix of the more common brown hair and a small amount of redhead genes. Russet hair color is more common in Western Europe, but some are still present in Central Asia and North Africa.

5. Blonde hair

People with pure blonde hair are usually descendants of the Nordic people, especially those from Scandinavia and Slavic countries. In these areas, pure blonde hair (platinum or pale blonde) and blue eyes are relatively common.

6. Red hair

Red-haired people have the highest levels of pheomelanin, mostly from the Scottish Islands in the United Kingdom. Other red-haired people may have a genetic ancestry from the southern borders of Europe or remote parts of Central Asia.

7. Gray or gray hair

Naturally white hair (brighter than platinum blonde) is the rarest hair color. Although people eventually grow gray or gray hair as they age, some people develop hair that lacks pigment. This rare condition may be the result of albinism or other genetic variations.

How does hair color work?

The color of the hair is determined by the mixture of melanin in the hair follicles, which in turn is further divided into two categories: eumelanin and panmelanin. In general, people with dark hair have a predominance of eumelanin (black or brown) than panmelanin (yellow or red).

Some people's original hair color naturally ranges from platinum blonde to black hair, with a lot of variation in between.