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.
Caucasians have the highest hair density among the ethnicities studied. Black people have the lowest. Asian people have hair density that falls somewhere in between.
African hair has the lowest growth rate. Hair growth rate and hair diameter were reported to be associated with cuticle interscale distance.
So, why is Afro-textured hair so fragile? With its tight curls and twists, is more prone to breakage for several reasons. Its shape increases tangling and makes combing harder. The shape also creates internal stresses when the hair is unbent, untwisted or stretched that lead to fracturing.
Black hair follicles have an elliptical shape that grow in a spiral and results in the slowest growth rate, at only about a third of an inch per month.
Asian hair the most dominant hair type in the world out speeds the rest with a growth rate of 1.3cm per month, and despite an estimated 80,000 to 140,000 scalp hairs, it usually has the least density.
Hair type 1A is super-straight. It doesn't even hold a curl! 1A is the rarest hair type.
Hair fragility is hair that is dry, brittle, and breaks easily with minimal amount of handling. 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.
The structure of hair
Depending on your hair's natural porosity, you may find your cuticle is raised, tightly bound, or in between. If your hair is highly porous, it loses moisture easily and is likely to have less sheen, as uneven surfaces refract rather than reflect line.
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.
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.
Sweden. Livings standards, healthy lifestyles, geography, and diet are the primary factors why people in Sweden have the healthiest and beautiful hair.
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.
genes and me » hair curl. 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.
Which country has the least bald men? According to the same Quora study, China is the country with the least number of bald men. Other countries like Japan, Thailand, South Korea, Taiwan, and Malaysia also have a lower prevalence of baldness.
African hair produces plenty of protective oils, called sebum, which keeps our hair healthy. In fact, African hair actually produces more oils than Caucasian and Asian hair. However, due to the tight curls, the oil doesn't spread evenly along the hair fiber. Without lubrication, the fibers can become dry.
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.
Typically dark Hair Colour's with weaker Developer's will be more prone to oils. Whereas lightened Hair dries out the Hair resulting in less oils.
Type 1A - This hair type is extremely soft, smooth and shiny. While this hair may feel like a dream for many, it lacks volume. Type 1B - slightly thicker and bouncier than 1A. Type 1C - Most coarse and thick straight hair.
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.
Straight hair is also the most resilient and oiliest of all the hair types. Straight hair is very hard to damage, and also difficult to curl. This is because the sebum in this hair texture easily spreads from the scalp to ends without curls or kinks.
The contest for the most attractive hair colour is obviously won by the blonde color with 35% of the overall vote, followed by the brunette. The bronze goes to Pippi Longstocking (people 30 and above will understand ? ). And the fourth place is for black hair colour.
The rarest skin color in the world is believed to be the white from albinism, a genetic mutation that causes a lack of melanin production in the human body. Albinism affects 1 in every 3,000 to 20,000 people.
The rarest natural hair colour is red, which makes up only one to two percent of the global population. You commonly see these hair colours in western and northern areas of Europe, especially Scotland and Ireland. However, natural redheads may not exist for much longer.