70 Together with the evidence from studies of heat gain and loss in birds and nonhuman mammals, these findings suggest that short, curly, Afro-textured hair evolved because it can maintain a boundary layer of cooler, dryer air near the scalp, and thereby protect the thermo- genic and thermosensitive brain.
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.
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...
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.
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.
Many women of African descent do not shampoo their hair daily because their hair is innately dry. The normal range is from several times a week to once monthly. Shampooing at least every one to two weeks is recommended to avoid product build-up, irritant dermatitis and seborrhoeic dermatitis.
It can lead to hair loss. Hair care practices and styling techniques can lead to fragile hair. African, African-American, and Afro-Caribbean hair tends to be fragile.
Growing afro hair can sometimes seem like an impossible task. One thing is for certain, however, and that's that it requires dedication and a whole heap of patience. Scientifically, black hair is the slowest growing hair type due to its elliptical shape and only grows about one third of an inch per month.
Using butter pomades and hair oils also deeply hydrate and nourish the hair. African chebe is also good for strengthening and moisturizing the hair.
The shape of the hair follicle determines the shape of the hair that grows out of it. Afro hair basically grows in a spiral-like manner from an oval hair follicle. Asian hair typically grows bone straight from a round hair follicle. Caucasian hair can be anything between Afro hair and Asian hair.
70 Together with the evidence from studies of heat gain and loss in birds and nonhuman mammals, these findings suggest that short, curly, Afro-textured hair evolved because it can maintain a boundary layer of cooler, dryer air near the scalp, and thereby protect the thermo- genic and thermosensitive brain.
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 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.
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.
Asian hair follicles are round, usually very straight, and strong. While not as dense as its counterparts, the hair is less likely to experience hair loss or breakage. Asian hair is also the fastest growing, at over half an inch per month.
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.
What does the stats say about black hair growth? Several studies undertaken to evaluate hair growth characteristics of African volunteers born in Africa. have found that show that African hair grows a maximum of 0.9 - 1.3 cm per month which translates to an average of 5 - 6 inches per year.
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, ...
Chinese men were less likely than White men to experience balding in any pattern. Black participants also had lower odds for temporal, vertex, and severe balding but to a lesser extent than Chinese men.
Type 1A is the rarest hair type and is stick-straight without even a hint of a wave.
These individuals appeared absolutely normal in every other respect, i.e. they showed no additional feature unusual to the Bantu. Since that date, thanks largely to the response obtained to requests for informa- tion published in this Journal, the present author has recorded 31 further cases of blue-eyed Africans.
For example, Native Americans used ash from burned soaproot or yucca plants, while certain African cultures relied on clay-based mixtures for cleansing.
"I'd recommend washing once every two weeks or so to keep your scalp healthy," he explains. "You should really focus the cleanser on the scalp rather than the braids themselves."