Compared to silkier hair African-American hair contains more lipids, or fats, but the lipids are less bonded which is why the hair loves oils so much. Along with that, the follicle size is much thicker and it has a flattened elliptical cross section causing it to be curlier than other hair types.
Afro hair produces plenty of protective oils called sebum, but the oil struggles to spread evenly along the hair fibre due to the curly nature of afro hair. Without lubrication, the fibres become very dry which causes the hair to become frizzy and brittle.
In most cases, ethnicity has been classified into three groups: African, Asian and Caucasian. 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.
Follicles that are more oval in shape cause curlier hair to grow. Very tightly coiled hair is due to the nearly flat, ribbon-like structure of their follicles. This hair texture is very common in people of African ancestry. Not only is African hair often coiled, it also has a unique texture.
Black hair is made up mostly of the keratin protein which absorbs light better and increases the natural production of melanin. This makes the hair and scalp of African Americans more durable, which makes them have curly, kinky hair.
Sickle cell diseases are especially common in people of African or Caribbean ancestry. They cause your body to make red blood cells that are sticky and curved and back up in your liver, and they die faster than your liver can filter them out. Bilirubin from these cells builds up in your body, causing jaundice.
The study's authors describe their results: “…we found that lighter hair (blond and brown) compared to darker hair (black) is generally associated with perceptions of youth, health and attractiveness, and generally leads to more positive perceptions of relationship and parenting potential.”
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.
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.
The Origin of Curls? So where do curls, kinks, and waves come from then? Most evolutionary theorists agree that human ancestry can be traced back to Sub-Saharan Africa about 500,000 years ago, but it also appears in other hot, sunny places.
Hair Growth Rate
Asian hair shows the fastest growth rate in comparison to the other two hair types. African hair has the lowest growth rate.
Natural red hair is the rarest hair color in the world, only occurring in 1 to 2% of the global population. Since red hair is a recessive genetic trait, it is necessary for both parents to carry the gene, whether or not they themselves are redheaded.
Sorry blondes, but 60% of the men in question said they find brunette to be the most desirable. A third of the men polled (33.1%) said they think the most attractive hair color is brown hair, while 28.6% said they prefer black hair. That means that in total, 59.7% of men said they prefer women with dark hair.
05. A Tukey test was applied to this data showing that all three hair colors differed significantly from each other. Brunette was clearly the hair color perceived as most attractive, with blonde as the second most attractive, and red as the least attractive.
As your skin, bone structure, and hair color change due to aging, your eyes may change, too. It's not unusual for blue-tinted rings to appear around your iris — the colored part of your eye. This condition is called corneal arcus.
Jaundice is a universal risk for newborns, but the stakes are higher for infants with a genetic heritage linked to certain ethnicities and races around the globe.
Amber eyes are a solid yellowish, golden or copper color and do not contain brown, green, or orange flecks. If you have amber-colored eyes, it's likely that you're of Spanish, Asian, South American or South African descent.
According to the study, men and women both viewed people with brunette hair color as more attractive than those with any other hue.
This colour and length of hair is most attractive on a woman. Longer and lighter hair is the most attractive on Caucasian women, a study has found. Both lighter brown hair and lighter blonde hair are seen as more attractive than darker or black hair.
Of those four, green is the rarest. It shows up in about 9% of Americans but only 2% of the world's population. Hazel/amber is the next rarest of these. Blue is the second most common and brown tops the list with 45% of the U.S. population and possibly almost 80% worldwide.
Blonde Hair
But this isn't the case because blonde hair is the 2nd rarest natural hair color. Only 3% of the total global population is blonde.
Black hair is the darkest and most common of all human hair colors globally, due to larger populations with this dominant trait. It is a dominant genetic trait, and it is found in people of all backgrounds and ethnicities.
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!
African hair is generally characterized by tight curls and kinks, and grows almost parallel to the scalp. This hair type has the slowest growth rate, 0.9 centimeters per month, due to its spiral structure that causes it to curl upon itself during growth.