Afro-textured hair characterizes all African populations and is the likely ancestral condition for humans. It may have evolved as thermoregulatory adaptation to help keep the scalp and brain cool under condi- tions of high environmental heat and strenuous exercise.
The highly kinky hair common to sub saharan blacks is an adaptation to the heat. The crisscrossed hair helps form a barrier to the hot sun as well as the spaces in it form an air cushion to hold cooler air that won't boil the brain. Note that my f...
Reason for that is, whilst African hair produces a lot of protective oils called sebum (more than Caucasian and Asian hair) it doesn't spread evenly along the hair fiber due to curls. Without lubrication, the fibers become dry. When brittle strands flake and roughen, hair becomes coarse to the touch.
Asian hair is the thickest, with a larger diameter of about 70 µm. Caucasian hair has an average diameter of 65 µm, and African hair is the finest, with a diameter of 55 µm. The cross-section of Asian hair is the most round and uniform, Caucasian hair has an elliptical shape, and African hair has a flattened shape.
African hair is fragile and prone to breakage and damage. This is because the scalp produces a natural oil called sebum, which makes the hair shaft smooth and difficult to comb or style.
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.
Afro-textured hair characterizes all African populations and is the likely ancestral condition for humans. It may have evolved as thermoregulatory adaptation to help keep the scalp and brain cool under condi- tions of high environmental heat and strenuous exercise.
Anthropologist Joseph Deniker said in 1901 that the very hirsute peoples are the Ainus, Uyghurs, Iranians, Australian aborigines (Arnhem Land being less hairy), Toda, Dravidians and Melanesians, while the most glabrous peoples are the Indigenous Americans, San, and East Asians, who include Chinese, Koreans, Mongols, ...
There is no scientific basis to claim that any particular ethnicity or race has "more dominant" genes than others. Genetic diversity exists within and across all human populations. All humans belong to the same species, Homo sapiens, and share the vast majority of their DNA sequence.
Genetics (which controls ethnicity) is the number one cause of hair loss. Certain races have higher rates of hair loss compared to others. Caucasians have the highest rates out of all the ethnic groups. On the opposite end of the spectrum, Native American Indians, Inuits, and Chinese have the lowest rates.
Naturally, Afro-textured hair has a number of different characteristics when compared with other hair types. The tight curl pattern of Afro-textured hair makes it more prone to dryness as the scalp's natural moisturiser (sebum) cannot travel easily along the length of the hair like it can in straighter hair types.
Yes, white people can have type 4 hair. While type 4 hair is mainly seen in African American women and men, this curl pattern is not race-specific. People of all ethnicities, including Caucasians, can have type 4 hair, although it is highly uncommon.
But did you know that some Black people have naturally blonde hair? It's a testament to just how diverse the African diaspora is. From blue eyes, to freckles, to Irish origins, it's impossible to confine Black people into a singular expression.
Studies have shown that the morphology of the hair follicle can be influenced by a person's race. Individuals of African ancestry, for example, are more likely to have curly hair due to the oval shape of their hair follicles.
Black women have shorter hair when compared with other types of hair, even after a prolonged period without cutting. This is explained by the fact that Afro-ethnic hair grows more slowly than Caucasian hair (0.9 cm/month and 1.3 cm/month, respectively).
Black hair is the most common in Asia and Africa. Though this characteristic can also be seen throughout Europe as well, it is considerably less common. It can be found in Celtic populations such as in Ireland, Scotland and Wales. Black hair can come in a variety of textures, just as any hair color.
Glazer et al also demonstrated that Asians had the highest sperm concentrations and Blacks the lowest, similar to our data.
Skin barrier function is reportedly stronger in darker skin tones (the stratum corneum is the skin barrier). Asian skin is reported to have similarities with Caucasian skin in terms of water loss and has the weakest barrier function.
Of the practicing regions, Middle Eastern and northern African nations show the greatest frequencies of consanguinity. Among these populations with high levels of inbreeding, researchers have found several disorders prevalent among inbred offspring.
Caucasian hair has a thinner diameter than Asian hair (60 – 80 µm in diameter), and therefore tends to appear 'finer' than Asian hair, even though there is typically more hair on the head (around 700,000).
Based on these findings, we hypothesize that the thickened cuticle layer in pubic hair may have evolved as a defence mechanism against chemical damage from urine, urea and ammonia. Keywords: FT-IR imaging; cortex; curly hair; cuticle; hair; pubic hair; scalp hair; urine effects.
There is no specific ethnicity that can't grow facial hair, but East Asian individuals, such as Japanese and Chinese, tend to have less facial hair and slower growth rates compared to other ethnicities.
The gene for curly hair in Caucasians
A recent genome wide association scan has found a SNP (single nucleotide polymorphism) called rs11803731 in the TCHH gene which accounts for about 6% of hair curliness.
Locs are also worn to defy European standards of beauty and help to develop a sense of Black pride and acceptance of African features as beautiful. In another branch of Rastafari called Boboshanti Order of Rastafari, dreadlocks are worn to display a black person's identity and social protest against racism.
To answer your question: Yes, Black people can absolutely have freckles. If you have them, embrace them! They're part of what makes your skin tone beautiful.