Defining What 'Popular' Means in Hair
The phrase "most popular hair" can be interpreted in several ways. Is it the most genetically common? Is it the most requested style at salons? Or is it the most-searched term on the internet? Answering this question comprehensively requires breaking down the concept into three distinct categories: natural color, natural type/texture, and trending hairstyles.
The Most Common Natural Hair Color
When looking at the global population, one hair color far outnumbers all others: black or dark brown. This dark shade is predominant across Asia, Africa, and Latin America. The presence of high concentrations of eumelanin, a pigment responsible for dark colors, in hair follicles is the cause. Brown hair is the second most common color, particularly in Europe, the Middle East, and parts of North Africa, while natural blonde hair is notably rare, found mainly in Northern Europe. The rarest natural hair color in the world is red, carried by only 1–2% of the population.
A Global Breakdown of Natural Hair Color
- Black/Dark Brown: Up to 85% of the world's population.
- Brown: Around 11% of the global population.
- Blonde: A rare 2% of the population naturally has this shade.
- Red: The rarest, at only 1–2% of the population.
The Most Common Natural Hair Type
Another way to address what is the most popular hair in the world is by looking at hair type, which refers to the natural shape of the strand (straight, wavy, curly, or coily). Type 1b hair is often cited as the most common hair type globally. This hair is straight but has some body and movement, unlike the very fine and rare Type 1a. However, hair type distribution is not uniform across all populations and is largely determined by genetics.
The Andre Walker Hair Typing System
Understanding hair types involves a standardized classification system, such as the Andre Walker system, which categorizes hair into four main types:
- Type 1 (Straight): Lays flat from the roots to the ends. It is divided into sub-types 1a (fine, limp), 1b (medium density with some body), and 1c (thick, coarse).
- Type 2 (Wavy): Ranges from loose, barely-there waves to more defined 'S' shapes. Sub-types include 2a (fine, thin waves), 2b (medium waves), and 2c (thick, coarse waves).
- Type 3 (Curly): Defined spirals or loops. This includes 3a (loose curls), 3b (medium ringlets), and 3c (tight, springy curls).
- Type 4 (Coily): Tight, dense curls that form zig-zag patterns. It is very fragile and can appear coarse. Sub-types are 4a, 4b, and 4c.
The Most Popular Hairstyle Trends
Beyond natural traits, popular hairstyles are subject to trends that can sweep across the globe. According to research using search data, the bob haircut is one of the most consistently searched and popular styles, topping charts in numerous countries. Another study suggested the layered cut as a reigning trend. Popular styles are heavily influenced by social media and celebrities, constantly changing with the fashion cycle.
Comparison: Natural Type vs. Trending Style
| Feature | Natural Hair Color | Natural Hair Type | Trending Hairstyle |
|---|---|---|---|
| Determined By | Genetics (eumelanin and pheomelanin) | Follicle shape and genetics | Culture, media, and celebrity influence |
| Most Common | Black or dark brown (approx. 80%) | Type 1b (medium straight) | Bob haircut, layered cuts |
| Stability | Generally lifelong (unless dyed or graying) | Lifelong, though can change due to hormones or health | Constantly shifting and evolving with new trends |
| Example | Asian and African populations predominantly have dark hair. | Caucasian hair varies greatly; straight is very common. | Celebrity-driven trends like the bob or '90s blowout. |
The Role of Genetics in Hair Diversity
Genetic makeup is the primary factor dictating hair characteristics, from color to shape and thickness. Variations in genes, such as the melanocortin 1 receptor (MC1R) gene, determine the type and amount of melanin produced, which in turn controls hair color. Similarly, specific genes like TCHH have been linked to hair texture in different populations. This means that while certain hair types may be statistically more common globally, distribution is not equal and reflects the diverse genetic heritage of different regions.
Conclusion
So, what is the most popular hair in the world? The answer depends entirely on how you define 'popular.' From a biological perspective, naturally black or dark brown hair is the most common color, while Type 1b straight hair is generally considered the most frequent hair type. In the ever-changing world of fashion, however, trending styles like the versatile bob consistently top the charts for global searches and interest. Ultimately, the diversity of human hair is what makes it so interesting, with a wide range of types, colors, and styles considered beautiful around the globe.
For more detailed information on the genetics of hair color, you can consult the resources at the National Institutes of Health (NIH).
