People from countries like Japan, China and Korea tend to have mostly straight hair, while Africans have curly hair and Europeans are mostly a mixed bag.
Most people of East Asian descent have thick, straight hair. This corresponds with a SNP (rs3827760) in the EDAR gene which is involved in hair follicle development. The ancestral allele of this SNP is the A-allele. The G-allele is the newly derived allele that leads to the thick, straight hair.
It has been reported that Asian hair is generally straight and is the thickest, while its cross-section is the most round-shaped among these three. Caucasian hair is generally straight or wavy and is the thinnest, while its cross-section is relatively elliptic.
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.
Type 1 hair is hair that lies flat, or straight. Straight locks tend to be on the shinier side because the hair's natural oils are able to travel from root to tip. This hair category includes divisions 1A, 1B, and 1C. Type 1A is “stick” straight hair that has no hint of curl or wave.
“Europeans have straight hair due to the mutation of one genetic variation and it is a different one in the case of the Asians. When they reached America, they hybridized with the native people and the result is like shuffling a deck.
Type 1A hair is very straight and fine, with no hint of wave or curl. As it is so straight and fine, when the natural oils travel to the ends, it tends to cause it to look like oily hair. It is the rarest hair type and is common among women of Asian descent.
Nearly 80% of Asians either have naturally straight hair or have styled it that way or they born with it. Straight hair is what is referred to as “Type 1” hair.
The average diameter, or thickness, of Asian hair is from 80 to 120 µm, compared to 65 µm in Caucasian hair and 55 µm in Black hair. The average diameter of Hispanic/Latino hair tends to fall between that of Asian and Caucasian. Caucasians have the highest hair density among the ethnicities studied.
The study looked for genetic variations in people of European descent to identify any genes associated with curly and straight hair. People of European descent have 45% straight hair, 40% wavy, and 15% naturally curly hair.
African Americans have the lowest hair density, averaging around 130 hairs per square centimeter and about 60,000 hair follicles on an adult scalp. Hair growth.
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.
We believe one of the reasons is that super-straight hair — also known as type 1a hair — is so rare. In fact, it's the rarest hair type. Only 2% of the world's population has 1a hair. It's mostly found in people of Asian descent.
There are various sources of bone straight hair yet Cambodian hair is the best bone straight hair.
Japanese hair straightening relies on a unique solution applied to hair, similar to a straight perm. This solution breaks down the hair's bonds that give it shape, allowing it to become pin-straight when the flat iron is applied.
And while the results did vary, in the end we found that 58% of the fellas agreed that curlier is sexier.
Sweden. Livings standards, healthy lifestyles, geography, and diet are the primary factors why people in Sweden have the healthiest and beautiful hair.
Individuals of African ancestry, for example, are more likely to have curly hair due to the oval shape of their hair follicles. Additionally, the Keratin Associated Protein (KAP) cluster genes, responsible for the structure of keratin fibers, have been found to have variations in many African populations.
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.
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.
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.
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.
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.
Coily Curls
The last, but most rare type of curl is the coily curl. This curl type is similar to that of an afro and when observed carefully, looks like the angular letter 'Z'. These curls require the most amount of moisture, as the hair type is much thicker than the other curl types.
How common is strawberry blonde hair? Having natural red hair is rare (like, two percent of the population rare), so coming across someone with natural strawberry blonde hair isn't common.