Caucasian. Caucasian people have rounder hair follicles, resulting for the most part in straight or wavy hair.
The story of human migration and evolution is written in hair DNA. In sub-Saharan Africa, genes favour tight, curly hair. But in east Asia, mutations have led to straighter, thicker hair. In Europe, other mutations brought wavy and straw-coloured hair.
Many Asians have naturally straight hair, but there is a significant group of us who do have naturally curly or wavy hair! However, because it's the norm to see straight and sleek hair, curly haired boys and girls tend to think that their hair is some kind of unruly straight hair that isn't behaving.
Human hair comes with all sorts of colors, textures and shapes. Notably, African hair is more coiled and dry; Asian hair is straighter and thicker; and Caucasian hair is somewhere in between with around 45% having straight hair, 40% having wavy hair, and 15% having curly hair.
The people of South Europe and North Africa have more curly and wavy hair than North Europe. Scotland and Ireland are a notable exception.
The African hair is generally curly or frizzy, and grows almost parallel to the scalp. It has the slowest growth rate of 0.9 centimeters per month due to its spiral structure which causes it to twist on itself as it grows. African hair has a flattened shape.
Genetic factors appear to play a major role in determining hair texture—straight, wavy, or curly—and the thickness of individual strands of hair. Studies suggest that different genes influence hair texture and thickness in people of different ethnic backgrounds.
Hair type and texture are determined by several factors, including genetics. The African hair is more coiled and drier; Asian hair (Korean, Japanese) is straighter and thicker; and Caucasian hair is somewhere in between with around 45% having straight hair, 40% having wavy hair, and 15% having curly hair.
Caucasian hair is generally straight or wavy and is the thinnest, while its cross-section is relatively elliptic.
Type 1A hair is very straight and fine, with no waves or curls whatsoever. This hair type tends to get very oily and requires frequent shampooing. It is the rarest hair type and is common among women of Asian descent.
The majority of the Japanese population has naturally straight hair and many who do have some form of curly hair have it chemically straightened in order to fit in. It isn't surprising then that there are very few hair salons that will even attempt to work with curly hair, let alone excel at it.
A general observation across experiments was that straight hair was perceived as younger, healthier, and more attractive than wavy hair and darker shades (medium copper and brown) were perceived more positively than blonde hair.
The same study showed that Asian (East and West) hair shape is also mostly straight (46.7%) or wavy (41.3%), with some curly hair (12%) (n = 92).
A wavy haired person can contribute either a C or an s gene. If paired to a straight haired person (ss), then the kids would either have straight (ss) or wavy hair (Cs).
Textured hair is a fast-growing market: an estimated 65% of the U.S. population has curly, coily or wavy hair.
Curly hair is dominant, so someone is more likely to have curly or wavy hair if at least one of their parents does. Recent research points to trichohyalin, a protein in hair follicles, as having primary influence over hair curl. However, there are many genes contributing to hair curliness, most of them unknown.
African hair has the lowest growth rate. Hair growth rate and hair diameter were reported to be associated with cuticle interscale distance.
Japan, Spain and Sweden are widely known for having people with healthy hair, but there are also other countries like India, France and Russia that are also known for helping people keep their hair natural and not messing with any artificial coloring.
You see, the women of the Red Yao tribe have some of the longest hair in the world – as in their hair is almost the same length as their height!
And while the results did vary, in the end we found that 58% of the fellas agreed that curlier is sexier.
3) Wavy hair
If you have wavy, lustrous hair, the chances of you being highly energetic, strong, innovative, and incredibly emotional are very high. People with wavy, voluminous hair are more likely to long for an intense connection, but they also like being alone at times.
Wavy hair (Type 2) hair types are naturally wavy and form an “S” shape. It is thicker than Type 1 hair types, and can be considered a medium between straight and curly hair. Because of its slight texture and shape, it is not as oily as Type 1.
One popular myth is that hair loss in men is passed down from the mother's side of the family while hair loss in women is passed down from the father's side; however, the truth is that the genes for hair loss and hair loss itself are actually passed down from both sides of the family.
Wavy hair is not considered curly, despite the fact that it has a pronounced wave. It has neither a straight nor a curly appearance. It's just in the middle of straight and curly hair. While wavy hair is less susceptible to oil accumulation than straight hair, it is more liable to frizz.